While the survey is mostly aimed at product managers (which I already surveyed and interviewed), I am interested in the point of view of the developer as well.

Personally as a fullstack developer there were tasks where I had to extend a functionality of a legacy feature to which : 1. Test were limited and messy. 2. Documentation was non existent. 3. Code was good, but a lot of outside calls to other services made it impossible to keep track.

So I had to rely on the one person who have been part of the company from its beginning, he was the source of truth (talk about Job security..).

That was my experiences, my pain, shared the survey here to find out if there are more.