It represents the work done in the process. You may have associated a form for data entry.
It represents the work performed by a user of a system connected to the workflow engine. Example: Registering employees.
It represents a task performed by a person who doesn’t use a workflow system. Example: Serving coffee.
Message sending task
Sends a message to another pool or process and automatically advances to the next task, which is typically a receiving task or an intermediate message capture event.
Message receiving task
Waits for a message from another pool or process. It’s usually positioned after a message sending task or an intermediate message sending event.
Performs a web service and is used to implement integrations with information systems.
Business rule task
It triggers a business rule that returns a value for comparison. It can be accomplished through a web service call.
Performs a sequence of commands using the process engine itself. It can be used, for example, to run a Powershell script.