Definition
Repurchase refers to the strategic decision in cloud computing to replace an existing on-premises or legacy system with a cloud-native equivalent, often from a different vendor or using a different service model. This involves migrating workloads, data, and applications to a new cloud platform or service, effectively buying a new solution rather than rebuilding or refactoring the old one. Repurchase is crucial for organizations seeking to modernize infrastructure, reduce operational overhead, and leverage the latest cloud innovations. For instance, a company might repurchase its on-premises email server by adopting Microsoft 365 or Google Workspace. This differs from lift-and-shift migrations, which aim to move existing systems with minimal changes. Understanding repurchase is valuable for cloud architecture discussions and appears in domains related to cloud migration and modernization on exams like AWS SAA.