Every tutorial you've ever followed taught you the same thing: write code, push code, deploy code. You are the bottleneck at every step. You write the feature. You write the tests. You review the PR. You deploy.
That's not engineering. That's manual labor with a keyboard.
A software factory is different. A factory takes a ticket — a description of what needs to happen — and produces a deployed, tested, reviewed feature. The human's job is to describe what they want and approve the output. Everything in between is automated.