uInstalling a Windows 2000 domain creates a parent/child trust
lAdds a new domain to existing domain tree
uEvery domain has at most one parent domain
lMultiple child domains
uCross-links for frequent resource use
lBetween domains in the tree
uDefining explicit trust to other domains outside directory tree
lExternal domain management not part of the tree of trust
lBusiness
partnerships requires shared access to resources