A shared place for team information
A SharePoint site can hold pages, files, and lists for a team or project. A document library is a place on that site where people store and organise files. A team might use a page for guidance and a library for project plans or reports.
SharePoint is part of Microsoft 365 and often works alongside Microsoft Teams. A file shared in a Teams channel may be stored in the team’s SharePoint site. Teams is where the conversation happens; SharePoint can hold the files and pages people return to later.
A link does not always mean access
What you can view or edit depends on the site, library, and file permissions. If a link does not open, ask the owner for access rather than assuming the file is missing.
Like a Confluence page or Google Workspace document, a SharePoint page is useful only when someone keeps it current. Check its owner and last update before relying on it as the source of truth.