Is it possible to implement an Office 365-ready network, at scale, without a proof-of-concept (PoC)? 

The intent of this guide it to identify Microsoft’s key recommendations in regards to Office 365 networking, and detail what additional network and security challenges you might face before, during and after deployment. Taken together, you might very well come to the conclusion that you can accelerate the future while also saving your organization more time and money than would otherwise have been anticipated.