If your account belongs to multiple orgs, the top-nav org switcher (#2419, #2379, #1172, #1213) jumps between them. Cookies are isolated (#1416) so switching never leaks data.See Navigation Overview for the full nav tour.
New orgs go through a simplified onboarding flow (#728). Domain settings and initial community creation are integrated into the first-run experience.See Creating an Organisation and Domains.
The landing page header (#823, #1146) controls the hero image / tagline members see when they land on your org’s public URL before picking a community. Configurable per brand.