Glossary

Shared calendar

A calendar more than one person can see, either inside one provider or across providers via a link.

Within a single ecosystem (a Google Workspace domain, a family's Apple accounts), sharing works through provider permissions. Across ecosystems, the portable mechanism is a share link plus an ICS feed: viewers open a web page or subscribe from whatever app they use.

Link-based sharing has two properties permission-based sharing lacks: recipients need no account, and the audience is not limited to one provider's users. The trade-off is that anyone holding the link can view, which is why revocable and refreshable links matter.