Building a Production-Grade CI/CD Pipeline — Part 3: Adding Cloud Cost Optimization
In Part 1, we built a pipeline that builds, tests, and deploys reliably. In Part 2, we added AI-powered security scanning that blocks bad code before it reaches staging. In this final part, we solve the last gap: cost visibility.
Right now, a developer can open a PR that changes an ECS task definition, a Terraform RDS instance type, or a CloudFront distribution config, and nobody knows the cost impact until the AWS invoice arrives three weeks later. We're going to fix that.
By the end of this article, your pipeline will estimate the cloud cost delta of every PR, post a clear cost report as a PR comment, and block deployment if the projected increase exceeds your team's budget threshold.
Why Cost Belongs in the Pipeline
This needs to be said plainly: cloud cost is an engineering problem, not a finance problem.
The teams that control their cloud...
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