What Happens During a Production Deployment? A Behind-the-Scenes Guide

You push your code. A few minutes later, it is live for real users. Between those two moments runs a long chain of machinery: builds, artefacts, migrations, health checks, traffic shifts. Every production engineer depends on that chain, and many teams still build and operate it themselves. Deployment infrastructure has quietly become operational overhead. It started as a technical necessity, something every team had to assemble because nothing else existed. Today it is a second system your…