Effective October 12, 2022, Power Apps portals is Power Pages. More information: Microsoft Power Pages is now generally available (blog) We will soon migrate and merge the Power Apps portals modules with Power Pages.
Power Pages provide a great way to allow internal and external audiences to view and interact with data from Microsoft Dataverse or Dynamics 365, and should be a consideration as a pillar in an organization's overall web strategy. This learning path introduces you to Power Pages that can be quickly provisioned to serve a variety of different audiences and workloads. We also cover fundamentals of Power Pages architecture, components, features, tooling, and security.