The supply chains of high-tech companies are globe-spanning marvels. Over the past 20 years, looking for ready sources of components, lower-priced labor, and talented designers and engineers, these companies have ranged throughout the world. In a highly competitive and fast-moving marketplace, they have sought to maximize their strengths and flexibility as products change rapidly and prices continue to fall.

But the sprawl and complexity of such networks have made it harder to manage end-to-end operations smoothly. Many technology companies are grappling with volatility and disruptions across their supply networks, and eliminating waste from duplicative efforts is an ongoing challenge. As product life cycles shrink, we see inventory buildups in the supply chains of some companies, while others cope with rising distribution costs, on-time delivery problems, or delays in getting new products to market.

In fact, high-tech companies have let complexity undermine collaboration in their supply chains: they aren’t working as closely as they could with their supply chain partners—sharing information or streamlining processes—to smooth out volatility and eliminate waste. This failure is surprising. The high-tech industry creates products that promote collaboration, openness, and efficiency. We all know stories about companies in other industries such as retail and consumer-packaged goods that...