AWS cost optimization
Best AWS EC2 cost optimization tools: 5 options to compare
An EC2 bill can grow for more than one reason. An instance may be the wrong size, run after work has finished, or use a purchasing model that no longer matches the workload. These tools help with different parts of that decision.
Shortlist at a glance
- Use Cost Explorer to understand the bill before changing a resource.
- Use Compute Optimizer to review EC2 sizing recommendations.
- Use SnoozeDB when selected non-production EC2 resources can be scheduled off.
- Use Cloud Custodian when scheduling belongs in a broader policy-as-code program.
- Use nOps when the decision is about AWS commitments rather than daily scheduling.
Start with the type of waste
A scheduler will not fix an oversized production workload. A rightsizing recommendation will not turn off a development environment over the weekend. The useful first question is simple: does the workload need a different shape, fewer running hours, or a different rate?
| Option | Primary job | Best fit |
|---|---|---|
| AWS Cost Explorer | Cost and usage analysis | Understanding where spend comes from |
| AWS Compute Optimizer | Rightsizing recommendations | Finding instances that may be over or under provisioned |
| SnoozeDB | Scheduling reviewed RDS and EC2 resources | Non-production resources with predictable idle time |
| Cloud Custodian | Policy as code | Platform teams with an established policy workflow |
| nOps | Commitment and rate optimization | Savings Plans and Reserved Instance decisions |
1. AWS Cost Explorer
AWS Cost Explorer is the place to investigate usage and cost trends. It helps a team narrow a broad EC2 bill to accounts, regions, instance types, tags, or time periods before deciding what to change.
It is a visibility tool, not an automation layer. That distinction matters. Use it to find a question worth answering, then move to rightsizing, scheduling, or commitment analysis.
2. AWS Compute Optimizer
AWS Compute Optimizer analyzes resource configuration and utilization metrics to make recommendations. For EC2, it can show whether an instance appears over-provisioned, under-provisioned, or optimized, and suggest instance types to evaluate.
Treat a recommendation as an input to review, not an unattended change. A workload can have memory, latency, licensing, burst, or operational constraints that basic utilization charts do not capture.
3. SnoozeDB
SnoozeDB focuses on a different source of EC2 waste: non-production resources that keep running when nobody needs them. Teams review their inventory, activate only appropriate resources, and apply business-hours or custom schedules. Protection rules and activity logs keep the workflow reviewable.
It fits development, staging, demo, and test environments with predictable idle periods. Read the schedule documentation and the guide to AWS instance scheduling tools.
4. Cloud Custodian
Cloud Custodian lets teams define EC2 policies as code. That can include filters, tags, reporting, and actions such as marking or stopping resources. It is a strong fit when the organization already reviews and deploys cloud policy through engineering workflows.
The trade-off is ownership. Your team maintains the policies, permissions, deployment path, and guardrails that prevent an incorrect rule from affecting the wrong resource.
5. nOps
nOps focuses on AWS rate optimization and commitment management. Its tools address the economics of Savings Plans and Reserved Instances, which is a different decision from whether a development instance should run tonight.
This approach makes sense for stable or forecastable workloads where commitment coverage is the main lever. It can complement scheduling and rightsizing rather than replace either one.
How to choose
Use a cost analysis tool to find the spend. Use a rightsizing tool when the workload must stay online but may be the wrong shape. Use a scheduler for reviewed resources with known idle hours. If the workload is steady, assess commitments after you understand its baseline.
Find EC2 resources that do not need to run overnight
Connect an AWS account, review the inventory, and choose the RDS and EC2 resources that are safe to manage. SnoozeDB uses a cross-account role and does not require AWS access keys.
Connect AWSFrequently asked questions
What is the fastest way to reduce EC2 costs?
Start with resources that do not need to run all the time. Scheduling non-production instances can reduce compute use quickly. For workloads that must stay on, review rightsizing and purchasing options before making a change.
Does AWS have an EC2 cost optimization tool?
AWS Cost Explorer helps investigate spending, while AWS Compute Optimizer produces rightsizing recommendations for eligible EC2 instances. Instance Scheduler on AWS can automate start and stop schedules for tagged resources.
Can Compute Optimizer stop an idle EC2 instance?
Compute Optimizer identifies optimization opportunities and makes recommendations. A team still decides whether and how to implement the change, including any stop or resize action.