Writing the code is step 1 but the tools that GitHub provides, especially around actions and workflows, are essential to my software development strategy and make CI/CD that much easier with the same tool I'm alreaddy using for version control.
I've been using your service for almost 6 years, and I'd say this is best (and most popular of couse) option on it's field. Great to see also latest innovations like copilot and beta features.