Spacelift is a CI/CD platform designed specifically for Infrastructure as Code. It runs Terraform, OpenTofu, Pulumi, Ansible, and CloudFormation under a unified pipeline model — plan on VCS event, policy evaluation, apply on approval — with a shared audit trail across all runtimes.
Policy is implemented via Open Policy Agent (OPA): Rego policies evaluate the full plan JSON before apply, enabling rules based on resource type, tag presence, estimated cost, or any attribute in the plan output. Spacelift Intelligence (March 2026) is an AI layer embedded in the run context that reads logs, state, and plan output to explain failures and propose remediation in natural language.
Stacks are the unit of management, each mapping to one IaC root module with its own state, variables, and run history. Drift detection periodically reconciles live cloud state against the last applied state per stack. Worker pools allow self-hosted compute for air-gapped or VPC-isolated environments. Free tier covers individual use; enterprise pricing is via sales.
