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Log Management · head to head

Azure Monitor vs CloudWatch

Azure Monitor logo

Azure Monitor

Log Management

Azure's Monitoring and Diagnostics Service

From
Free
Rated
-
Full reviewWebsite
CloudWatch logo

CloudWatch

Log Management

AWS Monitoring and Observability

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Azure Monitor billed per GB ingested across three separate log plans, Auxiliary, Basic and Analytics, so the plan chosen changes the rate as much as the volume does; CloudWatch the free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB
  • They diverge on capability: Azure Monitor covers Log collection, CloudWatch covers Log aggregation.

Where they differ

Only the attributes on which Azure Monitor and CloudWatch actually diverge.

Attributes where Azure Monitor and CloudWatch differ
AttributeAzure MonitorCloudWatch
Founded20102006

Identical on both: starting price (Free), pricing model (usage-based), free tier (Yes), platforms (Web, Api), user rating (Not yet rated), category (Log Management).

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 Azure Monitor

  • Log collection
  • Alerts and notifications
  • Custom dashboards

Only in CloudWatch

  • Log aggregation
  • Dashboards
  • Alarms and notifications

Both cover

  • Metrics collection
  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

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

Azure Monitor

  • Collecting logs and metrics from Azure resourcesnot CloudWatch
  • Alerting on metric thresholds and log queriesnot CloudWatch
  • Application performance monitoring through Application Insightsnot CloudWatch
  • Long-term log retention for compliancenot CloudWatch
  • Querying operational data with KQLnot CloudWatch

CloudWatch

  • Metrics and log collection for AWS workloadsnot Azure Monitor
  • Alarming on thresholds across AWS servicesnot Azure Monitor
  • Querying logs with Logs Insightsnot Azure Monitor
  • Live tailing logs during an incidentnot Azure Monitor
  • Distributed tracing alongside X-Raynot Azure Monitor

Where each one falls short

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

Azure Monitor

  • Billed per GB ingested across three separate log plans, Auxiliary, Basic and Analytics, so the plan chosen changes the rate as much as the volume does
  • Only the first 5 GB a month of Analytics logs is free per billing account
  • Retention beyond the base period is charged per GB per month, up to 2 years interactive and 12 years long term
  • Log queries and search jobs are billed per GB scanned, so investigating an incident costs money
  • Alert rules are billed per time series for metrics and by execution frequency for logs
  • The pricing page shows placeholders rather than rates until a region and currency are chosen

CloudWatch

  • The free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB
  • Custom metrics are $0.30 each for the first 10,000, so instrumenting broadly gets expensive before volume discounts apply
  • Each custom dashboard beyond the free three is $3 a month
  • Alarms are billed at $0.10 per alarm metric a month, with high-resolution alarms costing more
  • Log storage beyond the free 5 GB is $0.03 per GB per month on top of the ingestion charge

Pricing, plan by plan

Azure Monitor

Free
  • FreeFree
    • Log collection
    • Metrics collection
    • Alerts and notifications

CloudWatch

Free
  • FreeFree
    • Metrics collection
    • Log aggregation
    • Dashboards

Which should you pick?

Choose Azure Monitor if

  • You need log collection.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want alerts and notifications.
Azure Monitor review

Choose CloudWatch if

  • You need log aggregation.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want dashboards.
CloudWatch review

Questions people ask

Is Azure Monitor or CloudWatch better?
Neither clearly leads. Azure Monitor starts at Free and CloudWatch at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Azure Monitor or CloudWatch?
Azure Monitor starts at Free and CloudWatch at Free.
Does Azure Monitor or CloudWatch run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
Can I use Azure Monitor for free?
Both have a free tier, so you can try either at no cost before committing.
What is Azure Monitor best used for?
Azure Monitor is most often used for collecting logs and metrics from azure resources, alerting on metric thresholds and log queries, application performance monitoring through application insights, long-term log retention for compliance. Of those, collecting logs and metrics from azure resources and alerting on metric thresholds and log queries are not what CloudWatch is typically brought in for.
What can Azure Monitor do that CloudWatch cannot?
Azure Monitor covers Log collection, Alerts and notifications, Custom dashboards. CloudWatch covers Log aggregation, Dashboards, Alarms and notifications. Both handle Metrics collection, API, Webhooks, REST.
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