What happens when 

Software starts doing business with software:

For most of the internet's life, a person sat behind every action: a human clicked buy, signed in, or approved a payment. That is changing. A new class of software, the AI agent, can now pursue a goal on its own, use tools, make decisions, and increasingly find other agents, agree on work, and pay for it, all without a person in the loop. This section explains that world in plain terms, one piece at a time. Start with the primer, then follow the thread into communication, payments, identity, and the companies building it all.