343 Industries is the team that Bungie has passed the Halo torch to, upon leaving Microsoft. These are the guys that are going to be in charge of future Halo developments, Halo Reach Map Packs, and all other things Halo. In this behind the scenes look at the studio, the team goes into detail about the minutiae of creating the perfect multiplayer shooter map.
343 Industries in association with Certain Affinity is first tasked with creating the first map pack for Halo: Reach. The video below showcases the maps and the team behind the development. If you had your doubts that the franchise is in great hands, the video below is a must watch. Those that are tasked with taking the franchise further have a wealth of experience with the series.