Question: What is API Answer: API stands for Application Programming Interface . It is a set of rules and protocols that allows different software applications to communicate with each other. APIs define the methods and data formats that developers can use to request and exchange information between applications, services, or systems. Question: API Examples Answer: API Call Action GET /users List all users GET /users?name={username} Get user by username GET /users/{id} - Get user by ID GET /users/{id}/configurations Get all configurations for user POST /users/{id}/configurations Create - a new configuration for user DELETE /users/{id}/configurations/{id} Delete configuration for user PATCH /users/{id}/configuration/{id} Update configuration for use Question: Explain API Gateway Answer: An API Gateway is a server or service that acts as an intermediary between an application or client and a collection of microservices or backend services. It serves as a c