The term AI agent gets used too loosely. Here is what a real agent actually is, what makes it different from a chatbot or workflow, and when it is actually justified.
The term AI Engineer is everywhere. In many startups it means someone integrating APIs, building RAG pipelines, and wiring up tools. In research labs it means something completely different. Here is why the label has broken down — and what companies actually need.
RAG stands for retrieval-augmented generation. Here is what it actually means, why it matters for startups, and when it is the smartest first AI system to build.
A lot of startups say they want an AI agent when what they really need is a simpler system that works. Here is how to tell the difference before you overbuild.