Where I work in software development, we were about to undertake writing a pretty large application from scratch. Mostly, the company was a Java plus Spring shop with a few exceptions. One team wrote almost exclusively Python, for instance. But as far as I knew, there wasn’t any specific policy requiring the use of any particular language.

So as a team, we pushed to write our new project in Python. It was originally my idea, but my team got on board with it pretty quickly. Plus there was precedent for Python projects and Python was definitely appropriate for our use case.

The managers took it up the chain. The chain hemmed and hawed for months, but eventually made a more official policy that we had to use Java (and Spring).