In my company, we need to write down<p>1. Steps needed to run the apps for multiple environments
2. Staging/Production configurations and related steps to configure
3. List of servers with there addresses
4. Third party service settings and configuration data<p>I find it's hard to use a single Google Doc for all these. I think using GitHub wiki would be better as it deals with simple markdown text files, also linking, discoverability, code highlighting is bonus<p>What do you use and what is appropriate for this case? Also what are merits and demerits of each approach.