When I am working with a new software design team at companies of really any size (teams of 4 or 400) the first thing I do is set up a meeting to discuss their workflow. From an agile software development standpoint, most of the big players do a great job of this, naturally. However, from a file management standpoint, aside from using a cloud service, each designer seems to have their own method of storing docs, sketch files, assets, etc. Purple brings a lot of the experiences that you would want in the perfect design management flow in one place.
I love this product. I've used in in the past for telling the story of my design work to stakeholders. What was the initial prompt? What did we learn, how did we develop ideas and refine them? All these questions are woven together into a narrative that makes the messy process of product development easy to digest.
I use Purple to organize user research, map out my design process, and review findings and changes in my design. It's very intuitive and I highly recommend it.