App replication is the process of duplicating applications and their data to a new environment, such as another cloud platform, without disrupting the original system. It supports modernization by enabling testing, validation, and phased transitions, which reduces downtime and risk. In multi-cloud strategies, replication plays a key role by allowing organizations to run workloads across multiple platforms, avoid vendor lock-in, and optimize for performance, cost, or compliance. Replicating to Microsoft Azure enhances global scalability, improves integration with Microsoft services, and expands customer reach through Azure’s ecosystem, accelerating innovation and business growth.