"Agent" is the word of the moment, and it is doing a lot of heavy lifting in sales decks. Underneath the hype it means something specific and useful: software you give a goal to, rather than a fixed list of steps. It figures out the steps itself, then shows you the result.
The simple version
A normal automation follows steps you wrote. An agent is given the outcome you want and works out the steps on its own: plan, act, check, adjust, and try again until it is done. The catch, and the safety, is that you stay the one who approves what it produces.
The analogy: the junior assistant
Think of a sharp, tireless junior assistant. You do not hand them a script; you hand them a goal. "Draft replies to these enquiries." They take a first pass, flag the tricky ones, and bring it to you to sign off. They do the legwork; you keep the judgement. An agent works the same way.
How it differs from plain automation
Plain automation walks the same path every time. That is perfect when the job never changes. An agent earns its keep when the job varies: it can read the situation and choose the next step rather than break on anything you did not foresee.
Why it matters
Agents are powerful exactly because they are flexible, which is also why they need a human gate. Used well, an agent takes the messy first pass off your team's plate and leaves them the judgement calls. We build the agent and, just as carefully, the place where you say yes.