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Logging · head to head

CloudWatch vs Logstash

CloudWatch logo

CloudWatch

Logging

AWS Monitoring and Observability

From
Free
Rated
-
Full reviewWebsite
Logstash logo

Logstash

Logging

Data Processing Pipeline for Ingestion

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: 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; Logstash logstash's source is dual licensed: code outside the x-pack directory is Apache License 2.0, but code inside x-pack (which carries several of Logstash's monitoring and management features) is licensed under the Elastic License, not a fully open source license
  • They diverge on capability: CloudWatch covers Metrics collection, Logstash covers Data ingestion.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which CloudWatch and Logstash actually diverge.

Attributes where CloudWatch and Logstash differ
AttributeCloudWatchLogstash
Pricing modelusage-basedopen-source
Founded20062011

Identical on both: starting price (Free), free tier (Yes), platforms (Web, Api), user rating (Not yet rated), category (Logging).

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 CloudWatch

  • Metrics collection
  • Log aggregation
  • Dashboards
  • Alarms and notifications

Only in Logstash

  • Data ingestion
  • Event parsing
  • Data transformation
  • Multiple input sources

Both cover

  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

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

CloudWatch

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

Logstash

  • Log monitoringnot CloudWatch
  • Application performancenot CloudWatch
  • Security analyticsnot CloudWatch
  • Troubleshootingnot CloudWatch

Where each one falls short

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

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

Logstash

  • Logstash's source is dual licensed: code outside the x-pack directory is Apache License 2.0, but code inside x-pack (which carries several of Logstash's monitoring and management features) is licensed under the Elastic License, not a fully open source license

Pricing, plan by plan

CloudWatch

Free
  • Pay-as-you-goFree
    • Logs ingestion: $0.50/GB (first 5GB free), down to $0.05/GB at scale
    • Logs storage: $0.03/GB/month
    • Live Tail: $0.01/minute after 1,800 free minutes
  • Free tierFree
    • 5GB logs ingestion per month
    • 10 custom metrics
    • 3 custom dashboards

Logstash

Free
  • FreeFree
    • Data ingestion
    • Event parsing
    • Data transformation

Which should you pick?

Choose CloudWatch if

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

Choose Logstash if

  • You need data ingestion.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want event parsing.
Logstash review

Questions people ask

Is CloudWatch or Logstash better?
Neither clearly leads. CloudWatch starts at Free and Logstash at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CloudWatch or Logstash?
CloudWatch starts at Free and Logstash at Free.
Does CloudWatch or Logstash run on more platforms?
Both run on Web, Api, so platform support will not decide this one for you.
Can I use CloudWatch for free?
Both have a free tier, so you can try either at no cost before committing.
What is CloudWatch best used for?
CloudWatch is most often used for metrics and log collection for aws workloads, alarming on thresholds across aws services, querying logs with logs insights, live tailing logs during an incident. Of those, metrics and log collection for aws workloads and alarming on thresholds across aws services are not what Logstash is typically brought in for.
What can CloudWatch do that Logstash cannot?
CloudWatch covers Metrics collection, Log aggregation, Dashboards, Alarms and notifications. Logstash covers Data ingestion, Event parsing, Data transformation, Multiple input sources. Both handle API, Webhooks, REST, Web support.

Answered from the vendors’ own pages

CloudWatch: How much does Amazon CloudWatch cost?

CloudWatch uses pay-as-you-go pricing with no upfront commitment. Logs ingestion costs $0.50/GB (first 5GB free), logs storage is $0.03/GB/month, custom metrics cost $0.30/metric/month (first 10,000), custom dashboards are $3/month, and standard alarms are $0.10/metric/month.

Source
Logstash: How much does Logstash cost?

Logstash is free and open-source. The data processing pipeline is available to download at no charge and can be deployed without licensing costs or commercial restrictions.

Source
CloudWatch: Does CloudWatch offer a free tier?

Yes, CloudWatch free tier includes 5GB logs ingestion, 10 custom metrics, 3 custom dashboards, and 10 alarm metrics per month at no charge. Usage beyond these limits incurs pay-as-you-go fees.

Source
CloudWatch: What are CloudWatch's pricing tiers for high-volume usage?

CloudWatch offers tiered pricing with volume discounts: logs ingestion starts at $0.50/GB and decreases to $0.05/GB at higher volumes; custom metrics start at $0.30/metric/month and decline to $0.05 at higher volumes; Application Signals cost $1.50 per million traces initially, declining to $0.30.

Source
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