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Software · head to head

CloudWatch vs Elasticsearch

CloudWatch logo

CloudWatch

Software

AWS Monitoring and Observability

From
Free
Rated
-
Full reviewWebsite
Elasticsearch logo

Elasticsearch

Software

The heart of the Elastic Stack for search and analytics

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; Elasticsearch eventual consistency model with 1-second default refresh interval, not suitable for real-time transactional requirements
  • They diverge on capability: CloudWatch covers Metrics collection, Elasticsearch covers Full-text Search.

Where they differ

Only the attributes on which CloudWatch and Elasticsearch actually diverge.

Attributes where CloudWatch and Elasticsearch differ
AttributeCloudWatchElasticsearch
Pricing modelusage-basedUnknown
PlatformsWeb, ApiLinux, Windows, macOS, Docker, Kubernetes
Founded20062010

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

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
  • API
  • Webhooks
  • REST
  • Api support

Only in Elasticsearch

  • Full-text Search
  • Real-time Analytics
  • Distributed Architecture
  • RESTful API
  • Schema-free JSON
  • Aggregations
  • Machine Learning
  • Kibana

Both cover

  • Web 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 Elasticsearch
  • Alarming on thresholds across AWS servicesnot Elasticsearch
  • Querying logs with Logs Insightsnot Elasticsearch
  • Live tailing logs during an incidentnot Elasticsearch
  • Distributed tracing alongside X-Raynot Elasticsearch

Elasticsearch

  • Real-time applicationsnot CloudWatch
  • Content managementnot CloudWatch
  • User profilesnot CloudWatch
  • Mobile backendsnot CloudWatch
  • Cachingnot 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

Elasticsearch

  • Eventual consistency model with 1-second default refresh interval, not suitable for real-time transactional requirements
  • No support for ACID transactions or rollbacks; updates delete and re-insert documents
  • JVM-dependent architecture requires careful memory management and monitoring to prevent garbage collection issues at scale

Pricing, plan by plan

CloudWatch

Free
  • FreeFree
    • Metrics collection
    • Log aggregation
    • Dashboards

Elasticsearch

Free
  • Self-ManagedFree
    • Open source
    • Self-hosted
  • Elasticsearch Cloud$16.4/month
    • Managed service
    • 14-day free trial

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 Elasticsearch if

  • You need full-text search.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, Docker, Kubernetes.
  • You also want real-time analytics.
Elasticsearch review

Questions people ask

Is CloudWatch or Elasticsearch better?
Neither clearly leads. CloudWatch starts at Free and Elasticsearch at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CloudWatch or Elasticsearch?
CloudWatch starts at Free and Elasticsearch at Free.
Does CloudWatch or Elasticsearch run on more platforms?
CloudWatch runs on Web, Api. Elasticsearch runs on Linux, Windows, macOS, Docker, Kubernetes.
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 Elasticsearch is typically brought in for.
What can CloudWatch do that Elasticsearch cannot?
CloudWatch covers Metrics collection, Log aggregation, Dashboards, Alarms and notifications. Elasticsearch covers Full-text Search, Real-time Analytics, Distributed Architecture, RESTful API. Both handle Web support.

Answered from the vendors’ own pages

Elasticsearch: Is Elasticsearch free?

Yes, Elasticsearch can be deployed as free and open-source software for self-managed installations. Elastic Cloud managed service starts at $16.40 per month, with a free 14-day trial available.

Source
Elasticsearch: Can I use Elasticsearch without Kibana?

Yes, Elasticsearch is a search engine independent of Kibana. Kibana is a visualization and analytics tool that works with Elasticsearch but is optional. You can use the Elasticsearch API directly for searching.

Source
Elasticsearch: Does Elasticsearch support real-time indexing?

Elasticsearch indexes data with a refresh interval, typically 1 second. Data becomes searchable after the refresh cycle, making it near-real-time but not instantaneous. This can be configured but impacts performance.

Source
Elasticsearch: What are Elasticsearch's scaling limitations?

Elasticsearch requires careful operational management at scale, including shard balancing, heap sizing, and monitoring. Large clusters can suffer from garbage collection issues and become expensive to operate.

Source
Elasticsearch: Does Elasticsearch support transactions and rollbacks?

No, Elasticsearch does not support ACID transactions or rollbacks. Updates are expensive operations that delete and re-insert documents, making it unsuitable for transactional workloads.

Source
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