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Article Highlights:
A half-decade of large-scale disruptions has only bolstered the argument for supply chain diversity. A practical response to these risks, diversification is the act of spreading sourcing, manufacturing, and logistics across multiple suppliers, regions, and even technologies.
Real supply chain diversity requires geographical diversity. While adding an alternative supplier is almost always an effective supply chain risk management (SCRM) strategy, its benefits are greatly diminished if both suppliers operate their manufacturing facilities in the same region.
Bringing supply chain diversification into the design phase—including by flagging single-source components before they're finalized in a bill of materials (BOM)—gives teams the chance to substitute in multi-sourced alternatives while there’s still plenty of time available to make the switch.
Most sourcing and procurement teams know that relying too heavily on a single supplier or manufacturing region can heighten their risk exposure. What's harder, however, is turning that knowledge into an actual diversification strategy, one that can be implemented despite headwinds from existing supplier relationships and the day-to-day pressure to keep parts flowing.
The past several years have laid bare the hazards of sourcing concentrations focused on individual suppliers and geographical regions. Component shortages, port closures, geopolitical tensions, and natural disasters have all knocked out single-source suppliers and left their downstream manufacturers scrambling in recent years. A half-decade of large-scale disruptions, in other words, has only bolstered the argument for supply chain diversity. A practical response to these risks, diversification is the act of spreading sourcing, manufacturing, and logistics across multiple suppliers, regions, and even technologies, so that no single disruption can take your production line down with it.
Below, we explore seven strategies for strengthening your supply chain diversity and establishing a risk management program suitable for today’s volatile supply chains.
1. Map Your Supply Chain Before You Diversify It
You can't diversify what you can't see. A surprising number of companies discover their supply chain diversity problem only after a disruption hits, because they never had visibility past their tier 1 suppliers. The component your tier 1 supplier sells to original equipment manufacturers (OEMs) might itself be composed of subcomponents or materials that are single-sourced from a tier 2 or tier 3 supplier. That’s a hidden concentration risk that can only be identified and mitigated with sub-tier supply chain visibility.
Companies interested in strengthening their risk visibility can start by mapping their supply chain as deeply as they can, identifying single points of failure at every tier. While this can be arduous work, it’s also the foundation for much diversification and risk mitigation more broadly. Without an accurate, multi-tier map, diversification efforts often only address the most visible risks—rather than those lurking in tier 2 or tier 3.
2. Qualify Alternate Suppliers Before You Need Them
One of the most common mistakes in supply chain diversity efforts is waiting until a primary supplier fails before looking for an alternative manufacturer. The process of qualifying suppliers—verifying quality systems, testing samples, and negotiating terms—can take weeks, sometimes even months. Organizations that attempt to complete that process in the middle of a supply chain crisis are setting themselves up for failure.
Companies interested in a more responsible approach to supply chain diversity should establish a repeatable practice for identifying and pre-qualifying secondary and tertiary suppliers for the most critical and highest-risk components. Having alternative manufacturers that have already been qualified puts businesses in a much stronger position to respond quickly and decisively when disruptions strike.
3. Diversify Geographically
Adding a second or alternative supplier is almost always an effective supply chain risk management (SCRM) strategy. Its benefits, however, are greatly diminished if both suppliers operate their manufacturing facilities in the same region. That’s because those suppliers are both vulnerable to many of the same risks, including natural disasters, transportation shutdowns, geopolitical tensions, and trade compliance issues. Real supply chain diversity requires geographical diversity.
This is part of the argument for the onshoring, nearshoring, and friend-shoring strategies that have gained momentum over the past few years. OEMs that source from direct and sub-tier suppliers in China, Taiwan, and other Asian countries are giving themselves a great deal of geographical diversity when they qualify suppliers in the U.S., Canada, and Mexico, to cite a few examples of strong nearshoring candidates.
When evaluating new suppliers, businesses should weigh their location nearly as heavily as price and quality. While a supplier concentrated in the same region as the company’s other manufacturers might be cheaper, those cost savings could be quickly offset by a disruption from which they have minimal recourse.
4. Balance Diversity With Managing Complexity
There's a natural tension in supply chain diversification. More suppliers often do translate to greater supply chain resilience, but it often also leads to greater complexity, too: more relationships to manage, more quality systems to audit, more compliance documentation to track. Diversifying too heavily without the operational capacity to manage it effectively can create its own operational risk, one in which oversight is stretched too thin and riskier suppliers start slipping into an OEM’s manufacturing network.
Considering these hazards, organizations should not feel desperate to maximize their supplier count at all costs. Rather, businesses are better off finding the appropriate level of diversity according to the criticality of individual components.
High-risk, hard-to-source, or single-point-of-failure parts deserve more aggressive diversification. More widely available commodities that pose lower risks, on the other hand, don't require the same level of multi-sourcing diversity. Treating every part with the same diversification strategy wastes resources on low-risk items while potentially under-investing in those that carry the greatest threats.
5. Use Data to Prioritize Where Diversity Matters Most
Effective supply chain diversification strategies are built on data. That means understanding, at a granular level, which components carry single-source risk, which suppliers have concerning financial or geopolitical exposure, and which regions carry elevated vulnerabilities based on current events and historical patterns.
Teams that rely on manual tracking, including spreadsheets updated intermittently and supplier information scattered across communication threads, tend to diversify in a more reactive fashion, addressing whatever risk is most visible at the moment. Drawing on centralized supply chain risk data lets teams prioritize diversification efforts where they'll have the greatest impact, rather than spreading limited resources evenly across every part number.
6. Build Diversity Into New Product Design
Supply chain diversity is most often treated as a sourcing problem. But some of the most effective diversification decisions can actually happen during the design phase of the production process. When engineering teams specify components early in a product's development, they're often unintentionally locking in specific sourcing—and all the risks they come with, whether that’s single suppliers, single manufacturing sites, or geographical concentration concerns.
Bringing sourcing and compliance visibility into the design phase—including by flagging single-source components before they're finalized in a bill of materials (BOM)—gives teams the chance to substitute in multi-sourced alternatives while there’s still plenty of time available to make the switch.
Simply put, retrofitting diversity into a product that's already in production is far more disruptive and expensive than designing for it from the start.
7. Monitor Supplier Diversity on an Ongoing Basis
A supply chain that was well-diversified two years ago isn't necessarily as resilient today. Suppliers get acquired, operations are consolidated, and manufacturing locations are changed all the time. Further, businesses might have qualified a secondary supplier, only to find that it has quietly become just as concentrated as the primary source a few years later.
Considering these practical, often unavoidable realities, supply chain diversity has to be monitored continuously, not verified once and then left alone. Vetting diversity in this way means regularly reassessing supplier ownership structures, manufacturing footprints, and financial health, as well as updating supplier maps as conditions change. In order for supply chain diversity to maintain its effectiveness over time, OEMs need to understand it as an ongoing practice, one that must constantly evolve with the ever-shifting manufacturing landscape.
Strengthening Diversity With Risk Management Software
All of the aforementioned strategies are more powerful when they’re carried out in collaboration with one another. Companies that map their supply chain are able to reveal where sourcing is the most thin and diversity the most needed. Pre-qualification, meanwhile, makes the diversification process more practical and actionable. And geographical diversification ensures that alternative suppliers don’t suffer from the same risks and vulnerabilities as the other manufacturers already in an OEM’s network.
The common thread across all these combinations is data visibility. Every one of these strategies depends on having current, accurate information about suppliers, sites, components, and the risks each of those variables imposes.
SCRM platform Z2 provides users with that multi-faceted visibility. Z2 offers companies in industries ranging from automotive to medtech to aerospace and defense actionable data on suppliers, sites, and the manufacturing sources for their most critical components. Z2’s three central databases include:
One million suppliers with risk scorecards for each.
Over 200,000 manufacturing sites worldwide.
Over one billion components, including risk profiles and compliance information.
To learn about how Z2 helps businesses build a more resilient, diverse supply chain,
schedule a free trial with one of our product experts.
