Product Sunset and Migration Plan

Design a product sunset and customer migration plan for [Product Being Sunset] with [Customer Count] active customers migrating to [New Product/Alternative]. Include: 1) Decision framework — criteria that triggered the sunset decision, alternatives considered, strategic justification documentation. 2) Impact assessment — customer segmentation by migration complexity, revenue at risk, contractual obligations review, partner and integration impacts. 3) Migration path — feature mapping (old → new), gap analysis, workaround documentation for missing features, data migration plan and tools. 4) Timeline — announcement to full sunset: recommend 12-18 months. Phase 1: announce (month 1), Phase 2: migration support (months 2-12), Phase 3: restricted access (months 12-15), Phase 4: full shutdown (month 18). 5) Communication plan — initial announcement (email, in-product, blog), FAQ document, dedicated support channel, regular migration progress updates. 6) Customer retention — migration incentives (discounts, free onboarding, extended support), white-glove migration for top accounts, executive outreach for at-risk accounts. 7) Technical execution — API deprecation schedule, data export tools, redirect strategy, archive access policy. 8) Success metrics — migration completion rate, customer retention rate, revenue retained, customer satisfaction during transition. 9) Lessons learned — post-sunset retrospective template.