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Datadog vs MongoDB Atlas

Datadog logo

Datadog

Technology

Modern monitoring & security

From
$15/month
Rated
-
Full reviewWebsite
MongoDB Atlas logo

MongoDB Atlas

Technology

The multi-cloud developer data platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only MongoDB Atlas has a free tier, so it costs nothing to try first.
  • Each has a real cost: Datadog consumption-based pricing model makes costs hard to predict and can scale quickly; MongoDB Atlas m0 free tier limited to learning and exploration only with no backup capability
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Datadog and MongoDB Atlas actually diverge.

Attributes where Datadog and MongoDB Atlas differ
AttributeDatadogMongoDB Atlas
Starting price$15/monthFree
Pricing modelUnknownusage-based
Free tierNoYes
PlatformsWeb, Linux, Windows, macOSWeb
Founded2010Unknown

Identical on both: user rating (Not yet rated), category (Technology).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Datadog

  • Infrastructure monitoring
  • Application performance monitoring
  • Log management
  • Real user monitoring
  • Synthetic monitoring
  • Security monitoring
  • Network monitoring
  • Serverless monitoring

Only in MongoDB Atlas

Nothing recorded that Datadog does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Datadog

  • Infrastructure monitoringnot MongoDB Atlas
  • Application performancenot MongoDB Atlas
  • Security monitoringnot MongoDB Atlas
  • Log analysisnot MongoDB Atlas
  • Cloud monitoringnot MongoDB Atlas

MongoDB Atlas

  • Building applications with flexible JSON document storagenot Datadog
  • Performing full-text and vector search on unstructured datanot Datadog
  • Scaling multi-cloud deployments across AWS, Azure, GCPnot Datadog
  • Streaming event data integration with Kafkanot Datadog

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Datadog

  • Consumption-based pricing model makes costs hard to predict and can scale quickly
  • Add-on modules significantly increase costs: custom metrics, indexed spans, extended retention
  • No free tier for production monitoring
  • High costs for organizations with large amounts of log data or high-cardinality metrics

MongoDB Atlas

  • M0 free tier limited to learning and exploration only with no backup capability
  • Data transfer egress charges apply at 0.12 USD/GB for dedicated clusters; inbound free
  • MongoDB Search and Vector Search add significant per-hour costs starting at 0.12 USD/hour

Pricing, plan by plan

Datadog

$15/month
  • Infrastructure Monitoring$15/month
    • Host monitoring
    • Basic dashboards
  • APM$31/month
    • Application performance monitoring
    • Trace collection
  • Log Management$0.1/gb
    • Log indexing
    • Search and filter

MongoDB Atlas

Free
  • M0 (Free Tier)Free
    • 512 MB storage
    • Shared RAM and vCPU
    • No backups
  • Flex Tier$0.011/hour
    • 5 GB storage
    • Shared RAM and vCPU
    • Pay-as-you-go hourly billing
  • M2 Shared$9/month
    • 2 GB storage
    • Shared RAM and vCPU
  • M5 Shared$25/month
    • 5 GB storage
    • Shared RAM and vCPU

Which should you pick?

Choose Datadog if

  • You need infrastructure monitoring.
  • You work on Web, Linux, Windows, macOS.
  • You also want application performance monitoring.
Datadog review

Choose MongoDB Atlas if

  • You want to start without paying.
MongoDB Atlas review

Questions people ask

Is Datadog or MongoDB Atlas better?
Neither clearly leads. Datadog starts at $15/month and MongoDB Atlas at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datadog or MongoDB Atlas?
MongoDB Atlas has a free tier; the other does not. Paid plans start at $15/month for Datadog and Free for MongoDB Atlas.
Does Datadog or MongoDB Atlas run on more platforms?
Datadog runs on Web, Linux, Windows, macOS. MongoDB Atlas runs on Web.
Can I use MongoDB Atlas for free?
Yes. MongoDB Atlas has a free tier, so you can try it without paying. Datadog starts at $15/month.
What is Datadog best used for?
Datadog is most often used for infrastructure monitoring, application performance, security monitoring, log analysis. Of those, infrastructure monitoring and application performance are not what MongoDB Atlas is typically brought in for.
What can Datadog do that MongoDB Atlas cannot?
Datadog covers Infrastructure monitoring, Application performance monitoring, Log management, Real user monitoring.

Answered from the vendors’ own pages

Datadog: How is Datadog pricing structured?

Datadog uses consumption-based pricing tied to data volume ingested, hosts monitored, and products enabled. Infrastructure Monitoring starts at $15/host/month, APM at $31/host/month, and Log Management at $0.10/GB for indexed logs.

Source
MongoDB Atlas: How much does MongoDB Atlas cost?

MongoDB Atlas offers a free M0 tier with 512 MB storage, Flex tier at approximately 8-30 USD/month with pay-per-hour billing, shared clusters at 9-25 USD/month, and dedicated clusters from 56.94 USD/month. Add-on services like MongoDB Search cost 0.12-3.27 USD/hour.

Source
Datadog: Does Datadog offer a free tier?

Datadog offers a free trial but not a permanent free tier for production monitoring. Pricing begins with paid plans only.

Source
MongoDB Atlas: Is there a free tier?

Yes, MongoDB Atlas M0 free tier offers 512 MB storage with shared resources, suitable for learning and exploration. Flex tier allows pay-as-you-go usage starting at 0.011 USD/hour.

Source
Datadog: What integrations does Datadog support?

Datadog offers 1000+ built-in integrations including AWS, Kubernetes, Docker, Azure, GCP, and most major cloud platforms and services.

Source
MongoDB Atlas: What are the data transfer limits?

Inbound data transfer is typically free; egress from dedicated clusters costs 0.12 USD/GB. Free and Flex tiers do not incur data transfer charges.

Source
Datadog: Can Datadog monitor Kubernetes clusters?

Yes. The Datadog Agent runs as a DaemonSet to provide real-time visibility into pods, nodes, deployments, and control-plane health across major Kubernetes distributions including EKS, AKS, GKE, OpenShift, and others.

Source
MongoDB Atlas: What backup options are available?

M0 free tier and Flex tier do not include backups. Dedicated clusters M10 and above include backup services with region and snapshot storage-based pricing.

Source
Datadog: How can I reduce Datadog costs?

Datadog bills based on indexed logs, custom metrics, and high-cardinality tags. Costs can be unpredictable and may run 2-3x estimates. Prepaying annually can secure 5-15% discounts.

Source
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