Amazon DocumentDB vs MongoDB - Price Comparison

Amazon DocumentDB instance pricing is more expensive than MongoDB Atlas, the fully managed MongoDB service. AWS DocumentDB starts at $200 per month for a single instance, with no free tier. Pricing is per instance-hour consumed, from the time an instance is launched until it is stopped or deleted. Partial instance hours are billed in one-second increments, but there is a 10-minute minimum charge following a billable status change such as creating, modifying, or deleting an instance.

Compare this with MongoDB Atlas, which has a perpetual free tier and starts at $9/mo for shared clusters, and around $60/mo for dedicated clusters.

The pricing comparison below is based on a default 3-node DocumentDB and MongoDB Atlas cluster, with backup storage equal to cluster storage. MongoDB Atlas is 8% to 19% less expensive.

Atlas price (per mo.)DocumentDB price% difference
15.25 GB RAM / 80 GB storage$567.46$614.638.31%
30.5 GB RAM / 160 GB storage$1,086.73$1,229.2613.12%
61 GB RAM / 320 GB storage$2,147.20$2,458.5214.5%
122 GB RAM / 750 GB storage$4,143.36$4,928.0418.94%
244 GB RAM / 1.5 TB storage$8,277.95$9,856.0819.06%
488 GB RAM / 3 TB Storage$16,544.97$19,712.1619.14%

*Pricing correct as of September 2020

Convenience of a Single AWS Bill

MongoDB Atlas is available via the AWS Marketplace, providing streamlined procurement along with all other AWS services. Buying Atlas through the Marketplace enables customers to benefit from:

  • Consolidated billing through their AWS account

  • Retirement of their Amazon Enterprise Discount Program commitment

  • Simplified procurement with just a few clicks

  • Integration with AWS Marketplace catalogs and reports

  • A designated advisor from the AWS Marketplace team