AWS Control Tower
6.7#7 in cloud governance softwareFree planFree planWebAPI
VisitAWS Control Tower vs Open Policy Agent Gatekeeper
Open Policy Agent Gatekeeper
7.2#3 in kubernetes security softwareFree planFree planAPILinuxSelf-hosted
VisitWhat both publish
| Fact | AWS Control Tower | Open Policy Agent Gatekeeper |
|---|---|---|
| Limit: complexity | G2 reviewers report that initial setup, configuration and troubleshooting can be difficult for newcomers and nontechnical users. | The 2025 survey reports that some users find Gatekeeper overcomplicated for simple policies and find constraint-template debugging difficult. |
| Purpose | AWS Control Tower sets up and governs secure, multi-account AWS environments. | Gatekeeper is a validating and mutating Kubernetes webhook that enforces CRD-based policies evaluated by Open Policy Agent. |
| Rating on G2 | 3.9 out of 5 from 24 reviews | 4.5 out of 5 from 93 reviews, but the page identifies this as a vendor and contract lifecycle product rather than OPA Gatekeeper. |
| Rating on TrustRadius | 9.0 out of 10 from 4 ratings for likelihood to recommend | 8.7 out of 10 from 6 reviews, but the page identifies this as a contract and vendor-management SaaS product rather than OPA Gatekeeper. |
AWS Control Tower plans
- AWS Control TowerFree
Open Policy Agent Gatekeeper plans
- GatekeeperFree
- Open-source GatekeeperFree
Pick AWS Control Tower if…
It is intended for organizations managing multiple AWS accounts that need centralized governance and automated policy enforcement. Teams can also use its Control Catalog without creating a full landing zone.
Pick Open Policy Agent Gatekeeper if…
Gatekeeper suits teams managing Kubernetes clusters that need policy enforcement, mutation or recurring audits of existing resources. It is self-hosted and requires cluster-admin permissions to install.