Used in a sequence diagram, a message is a communication between objects that conveys information and results in an action.
Messages extend from the lifeline of one object to the lifeline of another, except in the case of a Self Message, in which case the message begins and ends on the same lifeline.
For related information, see Create a UML sequence diagram.
Note: Creating and editing UML diagrams on Visio for the web requires a Visio Plan 1 or Visio Plan 2 license, which is purchased separately from Microsoft 365. For more information, contact your Microsoft 365 admin. If your admin has turned on "self-service purchasing," you can buy a license for Visio yourself. For more details, see Self-service purchase FAQ.
