For you, the consumer, that means you'll have Netflix sitting there in your cable menu, much like you'd have the Netflix app available in Apple TV, Google Chromecast, or any number of other cable operators Netflix has already teamed up with.
Of course, you'll still need a Netflix login. But if you're like most people, you'll just "borrow" your parents' or cousin's username and password.
The deal is basically a win for everybody involved, as Comcast customers get easy access to their Netflix, Comcast incorporates Netflix's original content, and Netflix gets more potential customers through Comcast's massive user base.
This all comes after long-standing tension between Netflix and Comcast, as Netflix opposed the now-failed merger of Comcast and Time Warner Cable, and following Netflix CEO Reed Hastings' accusations that Comcast violated net neutrality rules.