SAP SE has told 400,000-plus customers that their current ERP systems hit end-of-mainstream-maintenance in December 2027. Every one of those customers must either migrate to S/4HANA cloud or negotiate extended support, and SAP controls both options. That deadline is not a product failure — it is the most effective forced migration mechanism in enterprise software history, generating a multi-year revenue acceleration that no competitor can disrupt because the alternative to migrating is running unsupported financial systems for global operations. Five former IBM engineers — Dietmar Hopp, Hasso Plattner, Hans-Werner Hector, Klaus Tschira, and Claus Wellenreuther — founded SAP in Walldorf, Germany in 1972 with the insight that enterprise data management should happen in real time on a central system rather than through batch processing on separate departmental computers. That insight, executed over 53 years, produced $39.7 billion in FY2025 revenue with $7.9 billion in net income and a $210 billion market capitalization from 109,000 employees. The company serves 400,000 customers in 180 countries. What SAP's customers cannot easily migrate away from is not the software interface — it is the institutional memory encoded in their deployments. Twenty years of purchase orders encode supplier relationships. A decade of approval workflows encodes the actual (not the official) decision-making structure of the organization. Finance closing procedures reflect regulatory interpretations that took years to negotiate with auditors. Extracting that knowledge from SAP and rebuilding it in a competing system is not an IT project; it is an organizational archaeology expedition measured in years and hundreds of millions of dollars. Revenue grew from $30.9 billion in 2022 to $31.2 billion in 2023 to $36.9 billion in 2024 to $39.7 billion in 2025, with the acceleration between 2023 and 2024 reflecting the cloud migration momentum building toward the 2027 deadline. Q1 2026 showed 27 percent cloud revenue growth, the leading indicator that the migration wave is sustaining. CEO Christian Klein has guided the Business Technology Platform, the Joule generative AI copilot announced in 2023, and the S/4HANA cloud migration as the three simultaneous strategic priorities.