This other article addresses the more complex topic of deploying multiple Edge servers in production-like setting, but also includes additional guidance and can be used as a deeper reference to the topics covered in this shorter article.
A much more detailed companion article entitled Skype for Business 2015 Edge Pool Deployment is also available which overlaps with a lot of the concepts and steps in this article.
The instruction in this article is without much of the typical in-depth explanation provided alongside most deployment articles on this blog. This article is intended for those following along with this series of deployment articles to create a Skype for Business (SfB) 2015 Server environment.