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MongoDB Atlas

What’s New in Atlas

  • Updates to the UI design.

  • Separation of group-level and user-level settings.

    The Settings view in the left-hand navigation bar now contains only the group-level settings. To access user-specific settings, click on your user name in the upper-right hand corner and select Account.

  • The Users view (i.e. Atlas users who belong to the group, i.e. not the MongoDB users) is now available directly from the left-hand navigation bar.

  • Group Name Improvements:

    • Remove restriction that required a globally unique Group Name.
    • Ability to rename Group by the Group owner.
  • Atlas Free Tier. See Create a Cluster for details.

MongoDB Atlas is a cloud service for running, monitoring, and maintaining MongoDB deployments, including the provisioning of dedicated servers for the MongoDB instances. In addition, Atlas provides the ability to introspect collections, query backups, and migrate data from existing MongoDB replica set into an Atlas cluster.

MongoDB Deployments

MongoDB deployments, or “clusters” in Atlas, can be either a replica set or a sharded cluster.

MongoDB Versions

Atlas supports MongoDB 3.2 and MongoDB 3.4 with the WiredTiger storage engine. By default, Atlas uses MongoDB 3.4. You can specify the MongoDB version when you create a cluster. If a created cluster uses MongoDB 3.2, you can upgrade to MongoDB 3.4 when you scale a cluster.

As new maintenance releases become available, Atlas automatically upgrades to these releases via a rolling process to maintain cluster availability.

If the workload on the Atlas cluster is such that it impedes operations, including the ability to scale, MongoDB Atlas may, in some situations, create indexes in your cluster as a safeguard.


Atlas deploys each cluster across availability zones and with mandatory security.

Each mongod process is deployed to its own AWS EC2 instance. For sharded clusters, the six routers (the mongos processes) run on six of the shard servers; i.e. each of the six mongos processes shares an AWS EC2 instance with one mongod process.

Atlas Group

Your Atlas group manages your MongoDB deployments. An Atlas group can have multiple MongoDB clusters.

A unique AWS Virtual Private Cloud (VPC) is created for each Atlas group. All clusters for the group are deployed inside this VPC. This region-specific VPC is created for the Atlas group during the deployment of the group’s first cluster.


Atlas secures your deployments through the use of TLS/SSL, virtual private cloud (VPC) subnet with IP whitelists, and user authentication and authorization.


Atlas provides support for the use of the service itself. Support for development and performance of the database itself requires a MongoDB subscription. For details, contact MongoDB Inc..

Next Steps

To get started, see Getting Started.

Additional Resources

For more resources, see Videos & Other Resources.