MongoDB Atlas is a solution for companies to migrate to a document-based database, removing the need for complex object-relational mapping layers and allowing developers to build and release new features quicker. The migration process can be streamlined with MongoDB Relational Migrator, which analyzes existing relational schema, designs a new MongoDB schema, and performs data migration. This solution is well integrated into the AWS environment and works seamlessly with various AWS products. Companies like Cox Automotive have successfully migrated their relational workloads to MongoDB Atlas on AWS, leveraging capabilities like Atlas Data Lake and Atlas App Services. However, careful consideration of data modeling is crucial when approaching this challenge, as a naive migration may not deliver the benefits of MongoDB's document-based database. Relational Migrator supports both one-shot and continuous sync migrations, allowing developers to map their relational schema or just a piece of it to a new MongoDB schema.