How APIs function as interfaces between systems and what role REST plays as an architectural style.
Which HTTP methods (GET, POST, PUT, DELETE) are used for which actions, and why they ensure clear communication.
What statelessness means and why stateless requests are important for scalability, stability, and automation.
How resources, endpoints, and URLs are structured, and how data is uniquely addressed in a REST API.
How requests and responses are structured, the significance of JSON formats, and how status codes help interpret results.
How the BIC Public API implements these principles and serves as the foundation for integration, automation, and cross-system processes.