Service-oriented architecture is a way of organizing the different parts of a computer system so that they work together. It's like a map that helps things figure out how to get from one point to another. Each part of the system is called a "service" and it does a specific job like getting data from another part of the system, turning data into a report, or sending an email. All of the services are connected so that they can communicate easily, and everyone in the system can understand how all the services should work together.