Did you know that the product catalog feature is actually available in Office 365? Many people don't and are missing out on some awesome capabilities to delivery content to users. It takes a little more configuration but the core feature set is there. Here's an overview of the features available:
Available in On-Premises and Office 365, what I like to call the "Prego. it's in there" features.
Query rules, display templates, rank models, managed navigation, friendly URLs
Search schema, analytics, CSOM, query builder and result sources
Product catalog site collection template
User segmentation to drive adaptive interfaces
Faceted navigation which supports taxonomy refiners
Anonymous access for cross-site publishing not supported
E3 and E4 plans only - cross-site publishing
Content search and content item reuse web parts
Category and item page layouts
Unable to modify search content sources (Microsoft manages this for you)
A few of us recently spoke at SharePoint Saturday Chicago Suburbs on using SharePoint's Product Catalog feature to deliver IT Service Management, check our our presentation.