One of the authors here. This website is still a work in progress.<p>It's an ongoing effort to gather all the resources that will help you use Erlang in a business. The booksite is divided in three sections focusing particularly on Erlang/OTP’s higher level concepts in the current open source ecosystem, how to use it in production (while setting up a pipeline for continuous development and delivery), and how to build a team when you’re starting from scratch.<p>We're working mostly linearly in each section, but they're not all progressing at the same pace. We have nothing yet on "building a team" although our outlines are all planned; the "hard things to get right" chapter was supposed to come in later but we saw enough questions about these topics to rush it out.<p>We might release things from each section as they are ready and we see fit. In the meanwhile, we're always appreciating feedback and people checking in to see what's new in terms of content.