Last week was developer Christmas, or Google I/O. But Santa—AKA Sergey Brin—didn't bring Glass news or the latest flavor of Android (Key Lime Pie).

Google did deliver a new Play store, All Access music, a new Google+, and plenty of APIs.

Google also gave marketers more ways to put their brand in users' hands.

What marketers need to know...

At I/O, Google introduced tools for better and faster development and user-centric design.

Retailers, restaurants, and services can now offer special discounts in Maps listings and get recommended in Google Now's voice search results.