FASTER, CHEAPER, MESSIER: LESSONS FROM OUR SWITCH TO SELF-HOSTED GITHUB ACTIONS

Summary from the TLDR Dev newsletter

The Guardian's iOS team was getting hammered by GitHub Actions costs, especially since macOS runners carry a 10x minute multiplier. They had an unused Mac Mini in the office, so they set it up as a self-hosted runner. Builds got 50-120% faster, monthly costs dropped £400, and they got control over their own macOS upgrades and debugging.