An AI agent receives a task, for example "Prepare this complaint for decision", and works through it in steps: read the message, pull order and delivery data from the ERP, check deadline and warranty status, assemble the case with a recommendation. Which steps it takes in which order, it decides based on the case. That distinguishes it from a fixed workflow.
The permission level is decisive. I work with four levels: read (view data), prepare (assemble drafts and cases), change (create or modify records) and trigger (postings, replies, orders). Most agents in mid-sized companies start at read and prepare. Everything binding waits for approval. An agent does not remove control, it moves it to the point where decisions are made.
The agent runs on a workflow platform with a local language model, connected to your systems. Every step is logged: what was read, what was decided, with what confidence. That is the basis for trust, improvement and evidence.