Retailers the world round have earned big sighs of relief: They survived the 2025 holiday season. They dealt with massive surges in demand involving billions of moving parts, from raw materials to retail shelves, with factories and tiers of suppliers humming in between.

Billions of SKUs were made, moved, stored and sold — a hypercomplex dance of trading partners scattered around the world, coordinating plans and production to ensure that everything went off without a hitch.

At least, that was the plan.

Because hitches are inevitable. Despite the best-laid plans, retailers experienced plenty of challenges. Consumer demand remained high throughout the year, posing a greater operational challenge than the usual seasonal spikes. Brands had trouble keeping up with the volume, and many experienced costly bottlenecks.

As the end-of-year dust settled, many retailers and manufacturers were already looking ahead to the next holiday season. As they sift through various optimization strategies and tools, one item should be at the very top of their list: unified supply chain planning.

Implications of Fragmented Planning

Even under optimal circumstances, supply chain planning is complex and challenging. It’s exacerbated by fragmented systems and data. Demand planners, supply planners and inventory managers often work in silos. Everybody has their own goals and priorities, and their own isolated workflows. Many teams are likely performing duplicative or redundant work.

When demand surges or slows, the entire organization and its supply chain lags. Shelves go bare, stockrooms overflow with unwanted products, customers get frustrated and resources are wasted. It’s a brittle and sluggish approach, one that’s incapable of handling peak-season volatility.

Consider a laptop. Manufacturers and planners spend months building forecasts, trying to determine whether a high-performance gaming model or a budget, student-friendly version will be in higher demand. They factor in volatility vectors like geopolitics, tariffs and weather patterns. If their forecasts are off by even a little, warehouses will be full of the wrong product and store shelves won’t have the product consumers actually want.

This is just one example, but it encapsulates what makes supply and demand planning so difficult. Add to that the siloed tools and disconnected teams that are seen too often in supply chains, and brands have an existential challenge on their hands.

This is where unified supply chain planning comes into play. When organizations begin operating on a single source of truth, they bring supply and demand planning together in real time. 

Demand forecasts can align with actual inventory positions, supplier capacity, labor availability and logistical constraints. Supply planning is informed by demand plans, promotions and forecasts, and can flex up or down to match evolving projections. Unified planning teams can more deftly anticipate and react to volatility. They can synchronize supply to demand, smooth out the bumps, capitalize on demand swings and reduce costs.

When artificial intelligence comes into the equation, unified planning becomes a whole different ball game. Planning teams can automate tasks, execute at scale and reduce their error rate. Agentic and generative AI combine to predict shifts to demand and supply, responding in real time to keep inventory balanced. Fulfillment routes can be optimized, reducing costs and delivery times while boosting customer satisfaction. With less manual, low-level work occupying their time, planning teams can spend more time considering the bigger picture and aligning with corporate strategy.

Unified, end-to-end supply chain planning makes organizations more agile and resilient in the face of disruption. Visibility, collaboration and decision-making are enhanced across the board to support smarter, faster operations. All parties involved — customers, planning teams, suppliers and partners — benefit from improved alignment and efficiency.

How Leaders Can Get Started

Getting started with unified supply chain planning is a transformational undertaking, but it doesn’t need to be overwhelming. Partnering with third-party experts can help ensure that the process gets done the right way. Results can include:

• Creation of a single planning process that aligns teams from supply, demand, operations, finance and sales;
• Alignment on a single demand forecast as the basis for all downstream planning, with clearly defined ownership;
• Integration of all team data into a single, unified platform or data layer, and
• Introduction of AI to support scenario planning and automation.

Keep in mind that, even with something as foundational as unified planning, businesses can approach it with a degree of iteration. Teams can take it one step at a time, starting small and scaling as they adjust to new processes.

In a world where peak-season volatility is the new year-round normal, supply chains must be intentionally designed for agile responsiveness. Siloed data and fragmented operations are much more than inconveniences; they’re existential threats. Unified planning directly improves the way organizations operate, collaborate and compete. The next holiday season will be here before we know it — the question isn’t whether organizations should unify their planning, but how soon they can do it.

Chris Shrope is senior manager, solutions marketing with Blue Yonder.