Workflow or agent?
A fixed path you designed, or a system that chooses its own steps.
A workflow follows a fixed path: step one, two, three. An agent is given a goal and tools and decides its own steps. Agents are more flexible and less predictable.
If you can draw the path in advance, it is a workflow. Reach for an agent only when a fixed path cannot do the job, such as investigating an unexplained traffic drop. For most business automations, workflows win on testing, cost and being easy to explain.
Find your way around
Learn it in the course, copy it from a playbook, see it work in a case study.