The modernization process aims to enhance the efficiency, agility, and resiliency of an organization's existing IT infrastructure, architecture, and products by implementing the latest technologies, methodologies, and models, such as cloud computing, agile development, automation, and containerization.
To ensure smooth operations when dealing with mission-vital workloads, it is crucial to implement a coexistence strategy that suits the specific use case and technological circumstances. This article focuses on a data synchronization approach for coexistence, which requires phased rollout, and explains how the AWS Data Migration Service was utilized to continuously synchronize data from an on-premise relational database to DynamoDB on the AWS cloud. The article also covers the challenges faced and lessons learned during the implementation process.