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AWS Certified Solutions Architect - Professional · AWS
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B is right The company is migrating from MongoDB to Amazon DocumentDB, which requires a database migration service. AWS Database Migration Service (AWS DMS) provides a managed service that can perform this type of migration. Using AWS DMS allows the solutions architect to create a source endpoint for the on-premises MongoDB database using change data capture (CDC), which captures changes made to the original database and replicates them to the target database in real-time. This approach ensures minimal downtime and minimal data loss during the migration process.
Option B
https://docs.aws.amazon.com/documentdb/latest/developerguide/docdb-migration.html