I was playing around with SharePoint Online Hub Sites today and noticed something interesting... You might be asking yourself what are Hub Sites?! Read all about them here: https://techcommunity.microsoft.com/t5/SharePoint-Blog/Organize-your-intranet-with-SharePoint-hub-sites/ba-p/174081 Note:...
In preparation of a new project I decided to run through this series of Blog posts: http://blogs.technet.com/b/tothesharepoint/archive/2013/02/14/how-to-set-up-a-product-centric-web-site-in-sharepoint-2013.aspx
I highly recommend going through this series of posts if you will be working with SharePoint 2013 Publishing Sites! A lot of good stuff on Product Catalogs, Managed Metadata, Search, etc.