The gap between what sales has promised customers and what the supply chain can actually deliver is one of the most persistent and expensive sources of operational friction in logistics businesses. Sales commits capacity that does not exist. Operations cannot meet customer expectations set without their input. Customers are disappointed. The CEO spends time mediating between functions that should be aligned before any commitment is made.
Sales and Operations Planning (S&OP) exists to close this gap before it becomes a crisis. When it is designed well and led from the top, S&OP is the forum where demand commitments and supply capabilities are reconciled into an integrated plan that every function can execute against. When it is underpowered or lacks executive sponsorship, it becomes a series of meetings that produce paper alignment without changing the behavior that causes misalignment in the first place.
The CEO is the essential ingredient in effective S&OP. Not because the CEO needs to manage every detail of the planning process, but because supply-demand trade-off decisions require cross-functional authority that only the CEO possesses. The CEO who leads S&OP actively creates a fundamentally different business operating rhythm than the CEO who delegates it to a supply chain planner and receives a summary report.
The Structure of Effective S&OP
An effective S&OP process operates on a monthly cycle that includes four sequential steps: demand review, supply review, pre-S&OP reconciliation, and executive S&OP meeting. Each step has a defined purpose, a defined attendee list, and defined outputs that feed the next step.
The demand review, typically held in the first week of the month, brings together sales, marketing, customer service, and planning to review and finalize the demand forecast for the coming 13 months. Statistical models provide the baseline, and the commercial teams layer in their market intelligence, promotional plans, customer-specific intelligence, and pipeline information. The output is a consensus demand plan that reflects the best current view of expected customer demand.
The supply review, typically held in the second week, brings together operations, procurement, and planning to assess supply capability against the demand plan. The supply team identifies capacity constraints, supplier constraints, and inventory positions that differ from what the demand plan requires. The output is a supply plan that shows where supply matches demand and where gaps or surpluses exist.
The pre-S&OP meeting, typically held in the third week, brings together senior leaders from all functions to review the demand-supply gaps, develop resolution options for each gap, and prepare recommendations for the executive S&OP meeting. This is where the analytical work of gap resolution is done, so that the executive meeting can focus on decisions rather than analysis.
The executive S&OP meeting, typically held in the final week of the month, is chaired by the CEO and includes the leadership team. The input is the pre-S&OP team’s recommendations; the output is a set of decisions that resolve the demand-supply gaps and lock an integrated plan for the coming period. This meeting should run 60 to 90 minutes; if it consistently runs longer, the pre-work is insufficient.
The CEO’s Role in S&OP
The CEO’s active involvement in S&OP distinguishes high-performing supply chain organizations from mediocre ones. This is not about micromanagement; it is about providing the cross-functional authority and strategic direction that the process requires to be effective.
In the executive S&OP meeting, the CEO’s primary function is decision-making on the trade-off questions that the pre-S&OP team could not resolve at their level. These trade-offs typically involve choices among competing objectives: customer service versus inventory cost, margin protection versus volume growth, short-term operational stability versus longer-term capacity investment. These are not planning questions; they are strategic questions that require the CEO’s perspective and authority.
The CEO also signals organizational priorities through S&OP participation. When the CEO chairs the S&OP meeting consistently, attentively, and with informed questions, the organization understands that supply-demand alignment is a strategic priority. When the CEO is consistently absent or distracted, the message is equally clear and the S&OP process loses the organizational credibility needed to enforce cross-functional commitments.
Between monthly S&OP cycles, the CEO should have visibility into any significant deviation from the agreed plan that requires out-of-cycle decision-making. Define the threshold for escalation: if demand is running more than 15 percent above or below the consensus plan for more than two consecutive weeks, the S&OP leader should brief the CEO and discuss whether an out-of-cycle review is warranted.
Resolving Cross-Functional Conflicts
The most valuable moments in S&OP are the productive conflicts, where sales commitments and supply capabilities are explicitly in tension and a decision is required. These conflicts surface issues that, without S&OP, would be suppressed until they explode in customer-facing operational failures.
A common conflict type: the sales team has committed to a major customer a volume ramp that would require 20 percent more warehouse throughput than current capacity supports. In the absence of S&OP, operations discovers this commitment when the volume starts arriving, and the result is service failure, overtime cost, and damaged customer relationships. In a functioning S&OP, the conflict is surfaced in the pre-S&OP meeting, alternatives are developed (reduce the ramp timeline, add temporary capacity, prioritize this customer’s volume at the expense of another customer’s), and the CEO makes a decision about which option to pursue before the volume arrives.
Conflict resolution in S&OP should be approached as collaborative problem-solving, not as a judgment of which function’s position is right. Sales and operations both have legitimate perspectives. The CEO’s role is to ensure that both perspectives are heard, that the trade-offs are explicit, and that a decision is made based on the best available information rather than organizational politics.
Document every significant S&OP decision with the rationale, the alternatives considered, and the expected outcome. This documentation serves as institutional memory, making it possible to learn from decisions that did not produce the expected outcome without requiring the retrospective analysis to reconstruct what was decided and why.
The demand planning process covers S&OP demand review in detail. The S&OP process depends on a credible demand plan; poor demand planning undermines every subsequent step.
Supply Constraint Resolution
When supply cannot meet demand, the S&OP process is where resolution options are developed and evaluated. The resolution options typically fall into three categories: increase supply, reduce demand, or accept the gap.
Increasing supply might mean adding a shift, qualifying a new supplier, air-freighting materials to compress a lead time, or approving overtime for a constrained operation. Each option has a cost and a feasibility constraint; the pre-S&OP team should present the cost and feasibility of each alternative so the executive meeting can make an informed choice.
Reducing demand might mean re-sequencing customer commitments, prioritizing high-margin orders over low-margin orders when there is not enough capacity to serve all demand equally, or having honest conversations with customers about delivery timelines before the delivery date passes. This option is uncomfortable but is always preferable to silent failure.
Accepting the gap is occasionally the right answer when the supply constraint is truly immovable in the relevant time horizon and demand cannot be shaped. In this case, the S&OP decision is about how to allocate constrained supply fairly and transparently, and how to communicate the situation to affected customers.
The peak season planning framework addresses seasonal demand peaks that must be anticipated months ahead.
Measuring S&OP Effectiveness
An S&OP process that does not produce measurable outcomes is a meeting, not a management system. Measure S&OP effectiveness through three types of metrics: process compliance metrics (are the meetings happening on schedule, with the right attendees, and producing defined outputs?), forecast accuracy metrics (is the consensus demand plan more accurate than the statistical baseline alone?), and business outcome metrics (are service levels improving, inventory levels declining, and supply-demand misalignment frequency reducing?).
Business outcome metrics are the ultimate test. If S&OP meetings are happening consistently and demand accuracy is improving but customer service is not improving and excess inventory is not declining, the meetings are not translating into behavioral change in the operations. Investigate what is preventing the plan from being executed as agreed.
According to McKinsey research on S&OP maturity, companies with mature S&OP processes outperform peers with 10 to 15 percent lower inventory levels, 5 to 10 percent higher service levels, and 10 to 15 percent lower operational costs, attributing the improvement specifically to better supply-demand alignment through structured planning governance.
S&OP is not a planning tool. It is a decision-making forum for the most important cross-functional trade-offs in your business. Lead it with the seriousness those decisions deserve, and it will become one of the highest-leverage hours you spend each month as a logistics CEO.
Common S&OP Failure Points and How to Avoid Them
Even well-structured S&OP processes degrade over time without active maintenance. The most common failure points are worth knowing in advance.
The first failure is the executive meeting becoming a reporting session. When leaders spend the 60-to-90-minute executive S&OP meeting reviewing data rather than making decisions, the process delivers information without authority. The fix is holding the pre-S&OP team accountable for arriving at the executive meeting with fully developed recommendations, not open questions.
The second failure is consensus that masks disagreement. Sales and operations leaders sometimes agree in the meeting and then execute against different plans once they return to their functions. Address this by requiring each function to confirm their plan in writing within 24 hours of the executive meeting. Written confirmation surfaces divergent interpretations before they become operational conflicts.
The third failure is treating S&OP as a monthly ritual rather than a living system. The monthly meeting is the visible part of the process, but S&OP effectiveness is built week-by-week through demand sensing, capacity monitoring, and the informal alignment conversations between planning cycles. CEOs who invest only in the meeting and not in the between-cycle management infrastructure will find their S&OP process producing paper decisions that operations ignores.
Related Reading
For further context, explore Annual Review Schedule for Logistics CEOs: Running the Year-End Process Without Losing Momentum and Bid Analysis Time for Logistics CEOs: Evaluating RFP Responses Without Getting Lost in Spreadsheets.