Supply Chain Resilience: 25 Evidence-Based Strategies That Actually Work

Your next supply chain disruption is already on its way. Nobody knows the date or the cause. It could be a fire at a sub-supplier you have never heard of, a port closure, a cyber-attack or a flood. The research shows how often this happens. Across the industries it studied, the McKinsey Global Institute estimated that companies can expect a disruption lasting a month or longer about every 3.7 years (Lund et al., 2020). In the Business Continuity Institute's 2024 survey, nearly 80% of organisations reported a supply chain disruption in the previous twelve months (Business Continuity Institute [BCI], 2024).

The good news is that resilience is not luck. It is a set of management practices, and many of them have been tested in peer-reviewed research, in field experiments and in firm-level data from real shocks. Some popular ideas hold up. Others, such as "just bring it all home" or "add a second supplier for everything", turn out to be more complicated than they sound.

This playbook gathers 25 evidence-based strategies from 70 studies, standards and official reports. Each strategy comes with the evidence, APA citations you can check, and three practical steps you can start using with your team this quarter. It is about how to build resilience, not a history of famous breakdowns.

The short version: Resilient supply chains are not the ones with the most inventory or the most suppliers. They are the ones whose leaders can see their network, know how long each part of it can survive a hit, put buffers and flexibility exactly where they matter, and practise their response before they need it.

Key takeaways

• Most firms are flying blind below tier one. In a 2021 McKinsey survey, just under half of companies said they understood where their tier-one suppliers were and what risks they faced, and only 2% could say the same about the third tier and beyond (Alicke et al., 2021).
• Disruptions destroy value for years. Firms that announced supply chain disruptions saw average abnormal stock returns of nearly −40% from one year before to two years after the announcement (Hendricks & Singhal, 2005).
• Inventory beat diversification in a real shock. When China locked down in early 2020, French firms with relatively high inventories absorbed the shock better, while sourcing from more countries did not seem to help (Lafrogne-Joussier et al., 2023).
• A little flexibility goes a long way. A limited, well-designed "chain" of flexible plants delivers about the same benefit as making every plant able to build everything (Jordan & Graves, 1995).
• Bringing production home is not a resilience strategy on its own. In a 64-country model of the pandemic, "renationalising" supply chains did not in general make countries more resilient (Bonadio et al., 2021).
• Boards are still under-informed. In 2024, only 30% of senior supply chain executives said their boards had a deep understanding of supply chain risk (Alicke et al., 2024).

How to read this guide: The 25 strategies are grouped into four parts: seeing your network, designing it for shocks, buffers and flexibility, and the people and governance that hold it all together. Use the table of contents to jump around. Citations in brackets lead to the full reference list at the bottom. Where a figure comes from a consulting survey, a working paper or a model rather than a peer-reviewed study, we say so. This article is general information for managers. It is not legal, financial or engineering advice for your specific operation.

Part 1: See the network before it breaks

Strategy 1: Map your suppliers' suppliers, starting with your top products

Most companies know their direct suppliers well and the rest of the network barely at all. In McKinsey's 2021 survey of senior supply chain executives, only 2% said they understood the locations and risks of suppliers in the third tier and beyond (Alicke et al., 2021). Progress since then has been uneven: by 2024, 60% reported comprehensive visibility of tier one, but the share with good visibility into deeper tiers fell for the second year running (Alicke et al., 2024). The scale is the problem. A large multinational can have hundreds of tier-one suppliers and an ecosystem of tens of thousands of companies behind them (Lund et al., 2020). Mapping studies show these networks are shaped mostly by cost decisions, not by anyone's view of risk (Choi & Hong, 2002).

How to put it into practice:

• Start with the bill of materials for your top five products by revenue and trace each component as many tiers down as you can (Choi et al., 2020).
• For each critical supplier, record alternate sites and how long it would take to ship from them.
• Ask key suppliers to take part in an annual mapping update, and write that expectation into contracts.

Strategy 2: Rank suppliers by impact, not by how much you spend with them

Procurement teams naturally watch their biggest suppliers. That is the wrong filter for resilience. In a three-year engagement with Ford, Simchi-Levi et al. (2015) built a model that "disrupts" each node in the network in turn and measures the lost production. Many suppliers posed little or no risk, but more than 400 sites had very high impact. The model found a low-cost sensor with high vehicle exposure that procurement had largely ignored because spend was small. Firm-level data agrees: when a supplier hit by a natural disaster makes a specific input, its customers suffer substantial output losses, and the damage spills over to other suppliers (Barrot & Sauvagnat, 2016).

How to put it into practice:

• Score every critical part on two axes: annual spend and the profit or output you would lose if it stopped.
• Give the "low spend, high impact" corner its own owner and review cycle. It is where hidden risk lives.
• Flag inputs that are custom-made or hard to substitute. Specificity, not size, drives the ripple.

Strategy 3: Measure time-to-recover and time-to-survive for every critical node

Two numbers turn vague worry into a plan. Time-to-recover (TTR) is how long a supplier, plant or route takes to return to full function after a disruption. Time-to-survive (TTS) is the longest time your network can keep meeting demand without that node, using inventory and alternatives (Simchi-Levi et al., 2014, 2015). If a node's time-to-survive is shorter than its time-to-recover, you have a gap, and you can size it. The approach has a practical advantage: you do not have to guess the probability of a fire or flood first. You learn the impact, then decide where probability estimates are worth the effort (Simchi-Levi et al., 2015). At Cisco, managers scored recovery times across components, suppliers, manufacturing and test equipment, and reported the scores to senior management twice a year (Sáenz & Revilla, 2014).

How to put it into practice:

• Ask each critical supplier for its time-to-recover per site, and treat optimistic answers with care.
• Calculate your own time-to-survive for each node from on-hand stock, in-transit stock and backup options.
• Focus first on nodes where TTS is lower than TTR. That list is your resilience budget.

Strategy 4: Stress test your supply chain the way regulators test banks

After the 2008 financial crisis, banks had to prove they could survive severe scenarios. David and Edith Simchi-Levi (2020) argued that companies supplying critical goods need the same discipline: map the supplier and logistics layers, then test how the network performs and recovers when a key supplier, facility or port goes down. The idea is not new. Chopra and Sodhi (2004) recommended team-based stress testing to find weak links before a crisis does. Simulation research during COVID-19 showed why scenarios must be specific: in Ivanov's (2020) model, the timing of when facilities closed and reopened at different stages mattered more for performance than the length of the upstream disruption itself.

How to put it into practice:

• Pick three to five scenarios: loss of your largest supplier, loss of a single-source part, a port closure, a demand spike and a cyber outage.
• For each one, record the revenue at risk, the first stock-out date and which decisions you would need to make in the first 48 hours.
• Rerun the test once a year and after any major network change.

Strategy 5: Plan for the ripple, not just the first hit

Disruptions travel. Researchers call this the "ripple effect": a failure at one node propagates through the network and changes performance far from where it started (Dolgui et al., 2018). The economic evidence is striking. After the 2011 Great East Japan Earthquake, the shock travelled both upstream and downstream to direct and indirect suppliers and customers, and the authors estimate it cut 0.47 percentage points from Japan's real GDP growth the following year (Carvalho et al., 2021). For Japanese affiliates in the United States, output fell roughly one-for-one with the drop in imported inputs, because those inputs could hardly be replaced in the short run (Boehm et al., 2019). Network structure matters too: some shapes of supply network are much less likely to turn a local failure into a network-wide one (Kim et al., 2015).

How to put it into practice:

• When you assess a supplier, ask "who else depends on this site?" A shared sub-supplier can hit you and your backup at the same time.
• Identify the nodes where many paths converge. These choke points deserve the most protection.
• Model second-order effects in your scenarios, such as customers cancelling or competitors buying up scarce capacity.

Strategy 6: Build an early-warning system that buys you hours, not days

The first hours after a disruption are often decisive, because whoever moves first secures scarce capacity. Craighead et al. (2007) found that two capabilities, warning and recovery, shape how severe a disruption becomes. Cisco is a well-documented example. After the 2011 tsunami in Japan, its supply chain managers knew within 40 minutes, and within 12 hours its risk team had assessed more than 300 suppliers and flagged more than 7,000 affected parts (Sáenz & Revilla, 2014). Contrast that with early 2020: in a survey by a supply-chain risk provider, 70% of 300 respondents were still identifying suppliers in locked-down regions of China by hand (Choi et al., 2020).

How to put it into practice:

• Link your supplier map to news, weather and port alerts so that an event triggers a list of affected parts automatically.
• Pre-agree who is called first, who decides and who talks to customers. Write it on one page.
• Track your "time to know" and "time to act" after every incident, and try to shorten both.

Strategy 7: Share information with partners to see further and react faster

Visibility is not something you can buy alone. It is built through connections with partners. In a survey of 264 UK manufacturing plants, connectivity and information sharing created a visibility capability, and that visibility improved both resilience and robustness (Brandon-Jones et al., 2014). Case research in food processing found that information sharing, joint communication and shared knowledge raised resilience by improving visibility, speed and flexibility (Scholten & Schilder, 2015). Poor information has a known cost. When each stage only sees its immediate customer's orders, demand swings get bigger as they travel upstream, the classic "bullwhip effect" (Lee et al., 1997).

How to put it into practice:

• Share real demand and inventory data with key suppliers, not just purchase orders.
• Agree a simple joint dashboard with your top suppliers covering capacity, lead times and risk flags.
• Hold a short quarterly risk review with critical suppliers, separate from price negotiations.

Part 2: Design the network for shocks

Strategy 8: Match the fix to the type of risk

There is no single cure for supply chain risk. Chopra and Sodhi (2004) sorted risks into categories such as delays, disruptions, forecast errors, system breakdowns, procurement problems, inventory and capacity. Each has different drivers, and a fix for one can make another worse. Extra inventory protects against delays but raises inventory risk. Fewer suppliers cut costs but raise disruption risk. Tang (2006) recommended "robust" strategies: practices that improve everyday efficiency and also make the chain more resilient when a major disruption hits. Kleindorfer and Saad (2005) argued that disruption risk management combines two joint activities, assessing the risk and mitigating it, and that both need management systems behind them.

How to put it into practice:

• List your top ten risks and label each one: frequent and small, or rare and severe. They need different tools.
• For every mitigation you propose, ask which other risk it might increase.
• Prefer moves that pay off in normal times too, such as better forecasting or flexible capacity.

Strategy 9: Dual-source where it pays, improve suppliers where it doesn't

A second supplier is the most popular fix, and McKinsey's 2024 survey found 73% of respondents reporting progress on dual sourcing (Alicke et al., 2024). The research suggests choosing more carefully. Tomlin (2006) showed that the best strategy depends on the nature of disruptions: as disruptions become rarer but longer, sourcing from a reliable supplier becomes more attractive than holding inventory. Wang et al. (2010) compared dual sourcing with helping a supplier become more reliable. Neither always wins. Improvement is favoured as suppliers' costs diverge, dual sourcing as their reliability diverges, and a combination adds the most value when suppliers are very unreliable or capacity is tight. Large-scale survey evidence links single sourcing, together with dependence on particular suppliers and customers, to greater supply chain vulnerability (Wagner & Bode, 2006).

How to put it into practice:

• Before adding a second source, compare its full cost with the cost of a supplier development programme for your current source.
• Qualify backup suppliers before you need them. An unqualified backup is not a backup.
• Give backups enough regular volume to stay ready, even if the split is 80/20.

Strategy 10: Don't assume more countries means less risk

"Diversify geographically" sounds like common sense. The evidence is mixed. When China locked down in early 2020, French firms sourcing inputs from China saw a 5.5% relative drop in domestic sales and a 5% drop in exports, and having diversified input sources beforehand did not seem to soften the blow. Higher inventories did (Lafrogne-Joussier et al., 2023). An earlier study of 307 disruption announcements found that more geographically diversified firms suffered a more negative stock market reaction (Hendricks et al., 2009). In Indian firm-to-firm data, firms that bought complex products with few available suppliers were less likely to lose those links after COVID-19 lockdowns, and firms with risky suppliers formed new links with larger, better-connected ones (Khanna et al., 2022, working paper).

How to put it into practice:

• Diversify against specific risks you have identified, not as a general reflex.
• Check whether your "alternative" suppliers share sub-suppliers, ports or regions with your main source.
• Remember that every new country adds complexity. Make sure you can actually manage what you add.

Strategy 11: Nearshore and friend-shore with your eyes open

Supply is moving. Using detailed US import data from 2017 to 2022, Freund et al. (2024) found that China's share of US imports fell from about 22% to 16%, largely because of tariffs. By 2023, Mexico had become the largest US trading partner for goods, with about $799 billion in two-way trade (U.S. Census Bureau, 2024). In McKinsey's 2024 survey, 60% of companies said they were acting to regionalise their supply chains (Alicke et al., 2024). But the shift is less clean than it looks. The countries that replaced China are often deeply tied into Chinese supply chains themselves (Freund et al., 2024), and a working paper by Alfaro and Chor (2023) notes early signs of rising prices for imports from Vietnam and Mexico.

How to put it into practice:

• When you move a supplier, map its own inputs. You may have moved the final assembly but not the dependency.
• Build the full landed cost: wages, tariffs, freight, lead time, quality and the cost of a disruption.
• Run nearshoring as a staged portfolio decision, not a one-time relocation.

Strategy 12: Don't confuse reshoring with resilience

Bringing everything home feels safe, but domestic supply chains face domestic shocks too. In a quantitative model of 64 countries during the pandemic, about one quarter of the total drop in real GDP came through global supply chains, yet "renationalising" those chains did not in general make countries more resilient (Bonadio et al., 2021). An OECD working paper reached a similar conclusion using a global trade model: in a more localised world, most economies were both less efficient and less stable, because they lost the ability to absorb shocks through trade (Arriola et al., 2020). Miroudot (2020) argues that resilience comes mainly from firms' own risk management rather than from where production sits. Governments still flag genuine concentration risks for critical goods (The White House, 2021), so the goal is targeted change, not blanket reshoring.

How to put it into practice:

• Reserve reshoring for genuinely critical items where the location itself is the risk.
• For each reshoring proposal, ask what new single points of failure it creates at home.
• Compare reshoring with cheaper alternatives such as extra buffer stock or a qualified second region.

Strategy 13: Hunt down hidden concentration

Many supply chains look diverse on paper but rely on one region, one cluster or one sub-supplier underneath. Craighead et al. (2007) found that the severity of a disruption depends on the network's density, complexity and the criticality of its nodes. They questioned the wisdom of supply base reduction, global sourcing and sourcing from supply clusters. The US government's 2021 review of critical supply chains named geographic concentration of sourcing as one of five recurring causes of vulnerability (The White House, 2021). Concentration often hides at the sub-tier, which is why mapping (Strategy 1) and stress testing (Strategy 4) belong together.

How to put it into practice:

• For each critical part, ask suppliers where the key raw materials and sub-components really come from.
• Highlight any region, port or sub-supplier that serves more than one of your "independent" sources.
• Set a concentration limit for critical categories, such as no more than a set share from one region.

Strategy 14: Design products so parts can be swapped

Some of the strongest resilience levers sit with engineering, not procurement. In the Ford study, the hardest suppliers to protect had low spend but high impact, often making cheap, high-volume components from a few dominant producers. The authors' suggested fix was product redesign: standardise components so the firm can move more volume to a supplier and then require dual sites (Simchi-Levi et al., 2015). Delaying the point where a product becomes a specific variant, known as postponement, also helps. Lee and Tang (1997) modelled its costs and benefits, and Hewlett-Packard used it to cut inventory while serving many markets (Feitzinger & Lee, 1997).

How to put it into practice:

• Include supply risk in design reviews: is this part single-source, custom or hard to substitute?
• Standardise common components across product families to pool volume.
• Where possible, hold stock in a generic form and customise late, close to the customer.

Part 3: Buffers, flexibility and the lean debate

Strategy 15: Lean is not the enemy. Too lean is.

After every crisis, someone declares lean dead. The data tells a more careful story. Between 1981 and 2000, median inventory holding periods in US manufacturing fell from 96 to 81 days. Firms with unusually high inventories had poor long-term stock returns, but firms with the lowest inventories had only ordinary returns, not the best (Chen et al., 2005). Eroglu and Hofer (2011) studied 54 industries and found a significant inventory-performance link in two-thirds of them, usually concave. There is an optimal level of leanness, beyond which performance falls. Christopher and Peck (2004) warned years ago that the drive toward "leaning down", combined with global sourcing, raises supply chain risk.

How to put it into practice:

• Keep lean's waste-cutting habits, but stop treating inventory reduction as a target in itself.
• Benchmark your inventory against your own industry, not against a general "best in class" number.
• Review the KPIs that reward ever-lower stock, and add a resilience measure next to them.

Strategy 16: Put buffers where time-to-survive is shortest

Buffers work best when they are targeted. In the early 2020 lockdown, French firms with relatively high inventories absorbed the supply shock better than others (Lafrogne-Joussier et al., 2023). In stock market data, firms with more slack in their supply chains suffered less negative reactions to disruptions (Hendricks et al., 2009). Yet companies are pulling back: in McKinsey's 2024 survey, the share relying on larger inventory buffers fell from 59% to 34%, and 46% planned to reduce or eliminate risk buffers (Alicke et al., 2024). The answer is precision. Tomlin (2006) showed that inventory suits frequent, short disruptions, while sourcing strategies suit rare, long ones.

How to put it into practice:

• Use your time-to-survive gaps (Strategy 3) to decide where safety stock earns its keep.
• Hold strategic stock of cheap, critical, hard-to-replace parts. It is often the cheapest insurance you can buy.
• Agree buffer stock or vendor-managed inventory with key suppliers so the cost is shared.

Strategy 17: Buy a little flexibility. It goes a long way.

Flexibility is the ability to shift production, volume or routes when something fails. It is often cheaper than redundancy. Jordan and Graves (1995) showed that limited flexibility, with each plant able to build only a few products, gives most of the benefit of total flexibility, as long as plants and products are linked in a "chain". Tang and Tomlin (2008) found that firms can gain significant strategic value from risk programmes that need only a relatively low level of flexibility. Sheffi and Rice (2005) argued that resilience comes from either redundancy or flexibility. Redundancy is mostly a cost until disaster strikes, while flexibility can also improve everyday operations.

How to put it into practice:

• Qualify each plant or line for at least one product beyond its main one, and link them in a chain.
• Cross-train staff so people, not just machines, can switch tasks.
• Negotiate flexible volume terms with logistics providers before you need them.

Strategy 18: Combine inventory and flexibility, don't choose between them

Inventory and flexibility work best together. Simchi-Levi, Wang and Wei (2018) modelled a hybrid strategy in which a firm places inventory before a disruption and uses flexible plants after it. They found a surprising "flip": when flexibility is low, firms should hold more inventory of high-variability products, but as flexibility increases, inventory should shift toward low-variability products. The study also extended the time-to-survive measure to this combined design. The lesson for managers is that your stocking policy should change when your network becomes more flexible.

How to put it into practice:

• When you add flexible capacity, revisit your safety stock policy at the same time.
• Ask your planning team to model inventory and flexibility as one decision, not two budgets.
• Track time-to-survive before and after each change to see the combined effect.

Strategy 19: Pre-plan your rerouting and adaptation moves

Some of the best responses are decided before the crisis. Tomlin (2006) found that contingent rerouting, switching volume to a backup supplier that can ramp up, is often part of the optimal strategy and can significantly cut costs. During COVID-19, Ivanov (2021) identified four broad adaptation strategies that kept supply chains viable: intertwining with other networks, scaling capacity, substitution and repurposing. Research on how firms actually respond shows two broad patterns. Some buffer themselves against partners, and others bridge closer to them. Past experience shapes which one they choose (Bode et al., 2011).

How to put it into practice:

• For each critical node, write a short playbook: the backup, the trigger point and who approves the switch.
• Pre-negotiate ramp-up terms with backup suppliers and carriers.
• After every incident, record what worked so your team's experience builds into better responses.

Strategy 20: Treat digital twins as a tool, not a magic fix

A digital supply chain twin is a computer model of your network that reflects its state in close to real time. Researchers argue it helps with mapping, visibility and testing responses (Ivanov & Dolgui, 2021), and digital technologies can improve control of the ripple effect (Ivanov et al., 2019). Consulting evidence is promising but should be read as case examples: McKinsey reports client cases such as an 8% cut in freight and damage costs at one manufacturer (Oca et al., 2024). Delivery is the hard part. In 2024, only 10% of companies had completed deployments of advanced planning systems, and 90% said they lacked enough talent for their digital goals (Alicke et al., 2024). Reviews of AI in supply chain risk also call for more real-world testing (Baryannis et al., 2019).

How to put it into practice:

• Start with one clear question, such as "where are our time-to-survive gaps?", not a platform.
• Clean your supplier and part master data first. A twin is only as good as its inputs.
• Build a business case with measurable outcomes and review it after six months.

Part 4: People, partners and governance

Strategy 21: Turn critical suppliers into partners

In a crisis, suppliers decide who gets scarce capacity first. Relationships matter. In a survey of manufacturers in three countries, communication and cooperation with partners improved resilience, while formal integration had no significant effect (Wieland & Wallenburg, 2013). The relational view of strategy explains why: trust, knowledge sharing and relationship-specific investment create value that arm's-length deals cannot (Dyer & Singh, 1998). Liker and Choi (2004) described how leading automakers built deep supplier relationships even with firms that had difficult histories with other customers. In a longitudinal study during the global financial crisis, knowledge management and collaboration strengthened resilience (Jüttner & Maklan, 2011).

How to put it into practice:

• Segment your suppliers and invest relationship time in the critical few, not evenly across all.
• Run joint problem-solving sessions on risk, not just quality and price.
• Pay on time and keep promises in good times. That is when the goodwill you will need is earned.

Strategy 22: Write resilience into contracts and scorecards

What gets measured and contracted gets done. Choi et al. (2020) recommend adding disruption metrics to supplier evaluations and spelling out expected recovery times and methods in contracts. In the Ford study, strategic suppliers with high spend and high impact were managed through long-term partnerships and risk-sharing contracts, and high spend gave Ford the leverage to ask for backup sites in other regions (Simchi-Levi et al., 2015). Kraljic's (1983) classic purchasing matrix, which separates items by profit impact and supply risk, remains a useful starting point for deciding which suppliers need which kind of agreement.

How to put it into practice:

• Add time-to-recover, backup sites and business continuity plans to your supplier scorecard.
• Include notification duties: suppliers must tell you of disruptions, including at their own suppliers, within a set time.
• Align procurement incentives with resilience, not just unit-price savings.

Strategy 23: Put supply chain risk on the board's agenda

Disruptions are a shareholder issue. Announcements of supply chain glitches were associated with an average abnormal drop in shareholder value of 10.28% (Hendricks & Singhal, 2003), and the longer-run stock underperformance reached nearly 40% (Hendricks & Singhal, 2005). Yet in 2024, only 30% of executives said their boards deeply understood supply chain risk, only a quarter had formal processes for discussing it at board level, and regular risk reporting had dropped to about one-quarter of companies from almost half the year before (Alicke et al., 2024). Research shows that being alert to disruptions is not enough on its own; firms also need a risk management infrastructure or the ability to reconfigure resources to become resilient (Ambulkar et al., 2015).

How to put it into practice:

• Report a short supply chain risk dashboard to senior leadership every quarter: top risks, TTS gaps and actions.
• Name one executive owner for supply chain resilience with a budget and clear decision rights.
• Translate risks into money: revenue at risk and cost of mitigation, side by side.

Strategy 24: Practise with scenarios before reality tests you

Scenario planning is often dismissed as a workshop exercise. Field experiments suggest it changes real decisions. In three experiments with experienced professionals, using multiple scenarios shifted their judgement of long-range investments according to how each investment fared in each scenario, and they came to prefer more flexible options (Phadnis et al., 2015). Schoemaker (1995) described scenario planning as a way to widen thinking without pretending to predict the future. Ivanov and Dolgui (2020) argue that extreme, long-lasting shocks require thinking beyond bouncing back toward "viability": the ability to survive and adapt over a long period. Ivanov (2022) developed this into a viable supply chain model.

How to put it into practice:

• Run a two-hour tabletop exercise each year using one realistic scenario and your actual team.
• Include people from procurement, logistics, finance, sales and IT. Disruptions cross every boundary.
• End each exercise with three named actions, owners and dates, and follow them up.

Strategy 25: Anchor your programme in a standard and keep improving

Resilience fades without a system to sustain it. ISO 22301:2019 sets requirements for a business continuity management system to prepare for, respond to and recover from disruptions (International Organization for Standardization [ISO], 2019). ISO 28000:2022 covers security management with attention to supply chain aspects (ISO, 2022), and ISO 31000:2018 gives general risk management guidelines (ISO, 2018). Practice is moving: in the BCI's 2024 survey, the share of organisations analysing critical suppliers down to tier four and beyond rose to 17.1% from 3.7% a year earlier, and uptake of insurance for major supply chain disruptions rose from 37.4% to 46.7% (BCI, 2024). Pettit et al. (2010, 2013) propose assessing resilience as a balance between vulnerabilities and capabilities, and their pilot testing suggested a link between greater resilience and better supply chain performance.

How to put it into practice:

• Use ISO 22301 as a checklist for your continuity plans, even if you never seek certification.
• Assess resilience once a year against both vulnerabilities and capabilities, and track the trend.
• Review your programme after every real disruption and every major network change.

Your 10-point action plan

1. Map your top five products down to at least tier two within 90 days, starting from the bill of materials.
2. Re-rank suppliers by impact, not spend, and name an owner for every "low spend, high impact" part.
3. Collect time-to-recover estimates from critical suppliers and calculate your own time-to-survive for each node.
4. Run one stress test this quarter on your most likely severe scenario.
5. Fix the biggest TTS gaps with targeted buffers, a qualified backup or flexible capacity.
6. Check for hidden concentration in regions, ports and shared sub-suppliers behind your "independent" sources.
7. Add resilience terms to contracts and supplier scorecards: recovery times, backup sites and notification duties.
8. Write one-page response playbooks with triggers, backups and decision rights for each critical node.
9. Report quarterly to leadership on top risks, gaps and actions, expressed in money.
10. Practise once a year with a cross-functional tabletop exercise, and review after every real disruption.

Build the skills behind the playbook. Resilient supply chains are run by managers who can see risk, make trade-offs under pressure and lead people through disruption. Explore BLTI's logistics, transportation and operations credentials to strengthen those skills, or take the free Leadership Flex Check to see how you lead when plans change.

Frequently asked questions

What is supply chain resilience?

Supply chain resilience is the ability to prepare for unexpected events, respond to disruptions and recover, ideally to the same or a better state than before (Ponomarov & Holcomb, 2009). A systematic review of the field describes it in terms of being prepared, responding and recovering quickly, and sometimes growing into a better position afterwards (Hohenstein et al., 2015).

What is the difference between time-to-recover and time-to-survive?

Time-to-recover is how long a supplier, plant or route takes to return to full function after a disruption. Time-to-survive is how long your network can keep meeting demand without that node. If time-to-survive is shorter than time-to-recover, you will lose sales unless you act (Simchi-Levi et al., 2015).

Is dual sourcing always better than single sourcing?

No. Dual sourcing reduces dependence on one supplier but adds cost and complexity. Research shows that improving an existing supplier's reliability can be the better choice in some conditions, and that the right answer depends on how often disruptions happen and how long they last (Tomlin, 2006; Wang et al., 2010).

Does nearshoring make supply chains more resilient?

It can reduce some risks, such as long lead times and exposure to one distant region, but it is not automatically safer. Studies show that new supplier countries often remain tied to the same upstream sources (Freund et al., 2024), and models of the pandemic found that renationalising supply chains did not in general make countries more resilient (Bonadio et al., 2021).

Should companies hold more inventory after recent disruptions?

Targeted buffers help. Firms with higher inventories absorbed the early-2020 supply shock better (Lafrogne-Joussier et al., 2023). But very lean and very heavy inventories both hurt performance in many industries (Eroglu & Hofer, 2011). The smart move is to place buffers where your time-to-survive is shortest.

How often should a supply chain stress test be done?

There is no legal rule for most firms. A sensible practice is to run a stress test at least once a year and after any major change, such as a new supplier, a plant move or a large new customer, in line with the continual improvement approach in ISO 22301 (ISO, 2019).

About this research

This article was compiled by the BLTI research team. We prioritised peer-reviewed journals, publications from established business schools and journals (such as Harvard Business Review and MIT Sloan Management Review), official government data, international standards bodies and major research firms. We checked journal references against their DOI records, and we checked survey and report figures against the publisher's own pages where we could reach them. Where a figure comes from a consulting survey, a working paper, a model or client case examples, we say so in the text. Statistics are reported with the year they refer to. Videos were confirmed against their official channels. This article is general information for managers and is not legal, financial or engineering advice. Decisions about your own supply chain should take account of your industry, contracts and local regulations.

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Videos

Harvard Business Review. (2023, January 5). Creating more resilient supply chains | HBR IdeaCast [Video]. YouTube. https://www.youtube.com/watch?v=tgqwv8Pk0qE

Harvard Business School. (2020, April 23). Managing through crisis: What toilet paper can teach us about supply chains [Video]. YouTube. https://www.youtube.com/watch?v=KAm-7F2cLQQ

MIT Center for Transportation & Logistics. (2020, October 20). Reshaping business and supply chain strategy beyond Covid-19 with Professor Yossi Sheffi [Video]. YouTube. https://www.youtube.com/watch?v=9MOUXbDQHfM

MIT Leaders for Global Operations. (2015, May 28). David Simchi-Levi and Don Rosenfield on supply chain strategies in the wake of the Japan disaster [Video]. YouTube. https://www.youtube.com/watch?v=9gm_rMrQh2U

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