Wondering how Bing's upgraded Page Zero search feature produces rich details and options before you've even finished typing? Microsoft has posted a deep dive that explains a lot of what's going on. Bing is taking better advantage of its entity relationship engine, Satori; as soon as the search tool finds a likely subject, it both displays an information tile and the most popular intentions associated with that subject. Look for the San Francisco Giants, for example, and Bing will offer search pages dedicated to scores or tickets. The technology is also clever enough to both expand and refine the list of intentions over time. The new Page Zero details won't necessarily get you to switch search providers, but they do show how Microsoft is responding to Google's constantrefinements.