The 1Data PeerIslands Data Sync Accelerator is a solution developed by MongoDB in partnership with PeerIslands to help enterprises address the challenges of migrating legacy systems to the cloud, particularly when transitioning from monolithic databases to microservices. This accelerator addresses key pain points such as data synchronization, duration, and data anti-corruption layer through its schema migration tool, real-time data sync pipeline, conditional data sync, data cleansing, DSLs for data transformation, and data auditing capabilities. The solution is designed to simplify the migration process, enabling enterprises to achieve development velocity, scalability, cost-of-change reduction, and ability to build multiple microservice databases concurrently, while ensuring the integrity of transaction data and preventing corruption. With its cloud-agnostic architecture, 1Data can be deployed on-prem or in the cloud, and is being further developed for various use cases, including single view and legacy modernization.