Key Takeaways from the Gartner Supply Chain Planning Summit
This year’s Gartner Supply Chain Planning Summit (2025) brought together leaders, planners, and innovators from across industries to discuss the evolving role of planning in today’s dynamic supply chain landscape. The event featured an impressive lineup of keynote speakers who inspired and challenged the audience to think differently about how we approach planning and execution. It showcased how organizations can build resilience, agility, and smarter decision-making capabilities in an increasingly volatile environment.
Bridging the Gap Between Planning and Execution
One of the standout sessions came at the close of the conference, delivered by Xiaoshun Sue Grant, titled “Bridging the Gap Between Planning and Execution.” Her presentation struck a chord with attendees when she opened with the powerful statement, “Not everything can be fixed by a better forecast.”
Despite being the final session of the day, the room was full, and her message resonated deeply. What caught many by surprise was Gartner’s data point showing that forecast accuracy has not significantly improved since 2017, despite major investments in technology and process improvement. Grant’s insights highlighted the limits of traditional forecasting and the need for greater executional flexibility. The takeaway was clear: better tools and more data aren’t enough if organizations fail to connect planning with real-time execution.
Why S&OE Matters
Grant’s presentation underscored a critical truth for many attendees: while Sales and Operations Planning (S&OP) remains foundational, the real competitive advantage lies in how companies manage Sales and Operations Execution (S&OE). She made the point that demand plans are not perfect and supply plans are not reliable, leaving us with a constant struggle between demand and supply. Planning leaders endeavor to make the best possible plans, but there is still a persistent gap between the plan and what happens on the shop floor or across the extended supply chain.
Many manufacturers still treat S&OE as an afterthought or assume that refining forecasts is enough to drive performance. However, as Grant pointed out, execution will always deviate from the plan because forecasts are imperfect and the world changes daily. The ability to recalibrate priorities in real time across functions is what sets leading companies apart.
Manufacturers that operate solely with an S&OP process risk shorter planning horizons and are often caught reacting to issues rather than proactively managing them. This reactive approach fosters a “firefighting” culture that hinders long-term improvement and strategic focus.
From Forecasting to Real-Time Adaptability
Across sessions and discussions, a recurring theme emerged: the shift from static forecasting to dynamic, responsive execution. Attendees recognized that true agility requires both a plan and the capability to continuously adjust it as conditions evolve.
Companies that bridge planning and execution by connecting demand shifts, production capacity, and supply constraints in real time stand to gain a significant operational advantage. This message was met with nods of agreement throughout the conference, emphasizing that S&OE deserves its own distinct process outside of S&OP and is essential for resilience and growth. This alignment between planning and real-time execution represents the next frontier in supply chain excellence.
Final Thoughts
This year’s Gartner Supply Chain Planning Summit in London felt like a turning point. The conversations were less about incremental forecasting improvements and more about how organizations can make their plans work in the real world.
The key takeaway: successful planning isn’t just about predicting the future, it’s about being ready to respond to it. As manufacturers continue to evolve their planning processes, integrating S&OE into everyday operations will be critical to bridging the long-standing gap between strategy, planning, scheduling, and execution. In doing so, businesses can unlock greater resilience, responsiveness, and competitive advantage in an uncertain world.