Rolling out updates on a Friday afternoon is still practiced in various industries.

> Rolling out updates on a Friday afternoon is still practiced in various industries.

By people with unreliable systems and a lot of myhts behind.

In a well engineered organization, you can deploy whenever you want. Sure, it will not work 100% of the time, but you figure out why, fix the problem and you will be one step closer to the mythical 100%. And so on. Deploying less frequently is what creates more problems.