“We plan in the perfect world—and we execute in the real world.”

This observation from Deloitte principal Jagjeet Singh during a recent episode of The Future of Supply Chain points to a widening gap between how supply chains are planned and how they actually operate.

Supply chain disruptions are no longer isolated events. Delays, shifting supplier commitments, and capacity constraints are happening more often and with less warning. For many teams, the issue is no longer access to data, but the disconnect between what is planned and what is actually happening.

The breakdown rarely starts big. A shipment is marked in transit but is not moving. A supplier confirms delivery, then pushes it out by several days. Production continues based on demand that has already changed.

Individually, these issues are manageable. Together, they create a version of operations that no longer reflects reality. Decisions made on that basis can quickly turn minor disruptions into problems that are difficult to unwind.

Where breakdowns begin

According to Singh, visibility remains the most common challenge for supply chains. Many teams have planning and execution systems in place, but have yet to establish a single, reliable view of operations because data still sits across multiple platforms.  That disconnection limits response and allows small issues to escalate.

Take, for example, a company where the planning and transportation functions report into separate parts of the organization. Both functions operate from different versions of the truth - each accurate in isolation, but inconsistent when combined.

Planning continues to recommend stock transfer orders based on a schedule. However, transportation processes, operating under revised carrier contracts, are unable to move goods on time. The problem isn’t immediately visible, so the system just keeps going.

Orders are generated based on inflated demand signals, and manufacturing ramps up production accordingly. Meanwhile, inventory builds up while goods remain stuck in the warehouse. By the time the issue surfaces, a one-time delay becomes a broader problem affecting inventory, working capital, and forecast accuracy.

Why incremental fixes are no longer enough

Over the past decade, teams have invested in technology to improve individual parts of the supply chain. Planning systems have advanced forecasting capabilities. Execution platforms have enhanced tracking. Even supplier tools have strengthened collaboration.

But those improvements have largely stayed within the function they’re implemented in. And that’s becoming a bigger problem as the lines between planning and execution continue to blur.

Supply chains no longer operate in long, predictable planning cycles where plans are created, handed off, and executed over time. Conditions now change continuously—demand evolves faster, transportation delays surface in real time, and supplier constraints emerge with little warning.

That pressure leaves little room for disconnected decision-making. Whether facing a demand spike, supply disruption, transportation delay, or another sudden change in conditions, planning, procurement, manufacturing, and logistics can no longer respond in sequence. Decisions made in one area immediately affect the others.

For example, a production increase may look achievable in the planning system, but execution realities can quickly make that plan unworkable. By the time those functions align, the situation often changes again, sometimes creating new issues before the original one is resolved.

This is why managing supply chains as a sequence no longer works. Disruptions are constant, and the decisions that address them should be made with that baseline in mind.

A key part of shifting toward connected, near real-time decision-making is scenario-based planning. Rather than relying on static forecasts, teams are modeling different outcomes, often using AI to analyze large volumes of data, identify patterns across the network, and surface risks earlier.

Singh advises that effective decision-making depends on evaluating cost, customer impact, and risk together, rather than enhancing one, at the expense of the others.

“Supply chain leaders can no longer look at decisions in isolation,” says Singh. “A demand spike is not just a production question. Organizations also need to understand supplier readiness, upstream material availability, manufacturing capacity, and transportation reliability—all at the same time. Missing any one of those factors can create disruption somewhere else in the network.”

A more connected system for a high-stakes economy

As Singh puts it, the future of supply chain is “hyperconnected … a complex web of networks that goes beyond the four walls of the organization.”

In that environment, decisions made in isolation not only lag but can also compound. Missed commitments hit revenue. Excess inventory locks up cash. Slow responses drive cost across the network.

But the same connectivity that creates risk also creates opportunity. Now, it’s a matter of whether your organization is built to operate within it—or still trying to manage around it.

Don’t miss the full conversation

Listen to the full episode to hear Deloitte principal Jagjeet Singh expand on how these breakdowns occur and how leading supply chain teams are responding with improved coordination, visibility, and decision-making.