If over the years you've researched best practices for deploying one of our technologies into your own Enterprise, Small Business or the like and have asked, "How would Microsoft deploy this technology?" or "how would Microsoft do it?",  you will now soon have access to the answer.  Microsoft is in the process of introducing the Produce Line Architectures for the following Productivity based technologies: SharePoint 2013, Exchange 2013 and Lync 2013.  Currently these are in CTP release (Community Technology Preview) only through Microsoft Services.

Today, the PLA Team has released their official blog which will serve as the public interface for core technical guidance, general availability and various other bits of information along the way.  You can access the blog and subscribe to the RSS feed at the URL below:
http://blogs.technet.com/b/pla/

Snippet from the first blog post:

What exactly is a PLA

The PLA at its most fundamental level is a prescriptive, well-defined architecture that provides variability through boundaries that are provided in the form of rules or constraints. It is built with an underlying framework in mind and takes a "configure first" versus customize approach to ensure deployments are consistent, repeatable and supportable. Think of it as a "directed-design" that encapsulates the collective Microsoft knowledge into a format that delivery teams can leverage to reduce the complexity and increase the delivery quality.

Feel free to post any questions you may have about the PLA in the comments section below.