MongoDB Cloud Manager Vs Mongodb Atlas

Cloud Manager is used when you want to manage your own infrastructure (you spin up the nodes where MongoDB runs) but still have the benefits of automated backups and monitoring.

Atlas goes one step further by automating everything for you including provisioning the infrastructure. It's a true database as a service fully managed by MongoDB. They hide the complexity of managing servers so all you have to worry about it using MongoDB. It's interesting to note they use AWS (with plans to support Azure and Google) to spin up nodes, perform monitoring, and backups.

The Major difference between Atlas and Cloud manager is that :

• Cloud manager is used for monitoring your database deployment and providing the automated back ups in the self hosted environment.

While MongoDB Atlas is used when your deployments are hosted on the MongoDB Servers. So each and ever task is managed by the MongoDB staff. This is basically the database as a service. In case you encounter any issue all you need to open a case with the mongodb and they will help in the investigations of the issue occurred.