What is a team wiki?
A team wiki is the place where you can create/import diverse pieces of content to be stored and accessed by your team at their discretion. Imagine having a Wikipedia, but only for your team.
Why not use Google Drive?
Slower, clunkier and hard to manage. G-Drive is meant to keep your files (documents, images, videos) but it's hard to organize and maintain, especially when it comes to your knowledge. That's why you need a good team wiki software!