I worked at a bank, we had this old loan system in a terminal, all the LOs could use it fast, little hiccups but we could fix it. New web-based UI came in (~20

I worked at a bank, we had this old loan system in a terminal, all the LOs could use it fast, little hiccups but we could fix it. New web-based UI came in (~2004) and it was super customizable and was supposed to be super fast. But nobody new the new hot keys, or there were none. But it was customizable! So I spent the next few months learning this new architecture, APIs, SDKs for the crap-ware and deployed for our LOs. I got so free beers. Then I helped another bank with the same issue in their migration - that second go was like free money.