DebConf is the annual Debian Developers' conference hosted at a different location around the world each year. This is organized by a local team that gathers for bidding a year or two before their conference. Topics which are longer running than a specific DebConf are catered for by teams which are commonly summarized as the "global team".
Global teams include:
Bursary team (providing support for travel and accommodation to eligible attendees)
Sponsors/fundraising team: https://wiki.debian.org/Teams/DebConf/Sponsors/
Video team https://wiki.debian.org/Teams/DebConf/Video
Website team: https://wiki.debian.org/Teams/DebConf/WebTeam
Registration team (provide support for registering to the conference and support to attendees during the conference or while traveling)
- Services handled by the team:
Interacting with the team
Email contact: firstname.lastname@example.org
Public IRC channel: #debconf-team on irc.debian.org (OFTC)
Technically, for the work at hand for a specific DebConf, there doesn't have to be a distinction between local and global team. On the contrary, there is nothing against "locals" doing "global jobs" and vice versa, though the latter is sometimes more difficult and sometimes impossible.
hang out on IRC on #debconf-team and learn whats going on
attend a DebConf and help during setup or during the conference in one of the teams
The committee can be contacted at email@example.com.