One of the DevOps goals you often hear about is "improved cycle time" for releases. What that means, basically, is speeding up the time from when a developer writes a line of code to when it is in production. The opposite would be writing code for a release that doesn't ship for a year or so (common in shrink-wrapped software). You often hear about teams bring their cycle time from months to days, from days to hours. Etsy brags that they've gotten it down to minutes. The benefits to reducing cycle time are well documented.
Well I have a technique that reduces it to a cycle time that is faster than minutes. Faster than seconds! It is absolutely instant. This is not even a new technique! It was common in the 1990s!
It's called "letting the developers edit code directly on the production server". Edit. Save. Boom! Code is in production. Thank you. #dropthemic
(P.S. If you weren't sure, I'm just kidding.)