
Multi-site rollouts unfold in phases that align with each company's S&OP cadence, not a single switch-on date. Saint-Gobain Sekurit illustrates the pattern: the team deployed Flowlity progressively across its 30 distribution centers, its central distribution hub, and its 3 European plants. Starting at the distribution centers gave Sekurit a tangible win on sales forecasting and inventory management before tackling the more complex central warehouse collaborative planning layer. Adding production forecasting at the plants came last because it depends on coherent downstream demand signals to be useful. Initial integration phases can be measured in weeks rather than months (Sekurit's first ERP-to-Flowlity connection took eight weeks), while full end-to-end coverage extends across multiple planning cycles as each layer is added and stabilized. This sequencing reduces operational risk: at any point, if one node needs adjustment, the team can refine it without disrupting the layers below. The trade-off is slower full ROI but much higher adoption confidence and operational stability, which is the right trade for a network operating at the scale of a multi-tier manufacturing Supply Chain.