The developer community is concerned about MongoDB Atlas's deprecation of edge and mobile capabilities. A migration from MongoDB Device Sync (Realm) to Couchbase Capella offers a technical overview, considering both cloud server-side components and mobile application aspects. To begin the migration, developers can start with Couchbase Capella's Free Tier, including Capella App Services, and upgrade to paid tiers once validated. The data model should be determined, and buckets, scopes, and collections organized accordingly. A Capella cluster is deployed and configured according to application needs, setting up services like Query, Search, cluster access credentials, and IP Address allow lists. Data migration options include export/import utilities, enterprise-grade tools, open-source tooling, or manual data transformation. App Services should be set up with authentication mechanisms, mobile app users and roles, access control, and channels. The Realm application is migrated to Couchbase Lite, rewriting the model layer and simplifying queries using SQL++. Finally, integrations with other subsystems and services are reconfigured for the transition.