• Self-Hosted GitHub Runners on Spot Instances

    GitHub-hosted runners are $0.008/minute. EC2 Spot c5.2xlarge is $0.0344/hour — 7× cheaper for the same hardware. Here's the architecture behind jit-runners: on-demand self-hosted runners via AWS Lambda and EC2 Spot.

  • Automating Infrastructure PRs with Neptune

    Neptune adds plan-on-open and apply-on-comment to your GitHub Actions Terraform/OpenTofu workflow. Here's how it works, what it enforces, and how to set it up from scratch in under an hour.

  • GitOps with OpenTofu: Why We Chose It Over Terraform

    When HashiCorp changed Terraform's license to BSL in 2023, we started evaluating OpenTofu. Here's what we learned after running both in production, and why OpenTofu is now our default for new projects.

  • What is Platform Engineering? A Startup Guide

    Platform engineering gives startup teams infrastructure self-service without the overhead. Here's what it means in practice, what CNCF tools are involved, and when a 10-person team actually needs it.