IT Explanations

Clear explanations of IT concepts, protocols, architecture and enterprise technologies.

Concepts, protocols and architecture
Infrastructure, cloud and security
Clear explanations and real-world context
For sysadmins, IT admins and MSPs

All Explanations

Understand the technology behind your infrastructure.

1 explainer foundAuthenticationRemove topic filter Clear filters

Abstract visualization of different software systems connected through API interfaces with data flow elements in blue, teal.

What is API? Definition, How It Works & Use Cases

An API (Application Programming Interface) is a contract that lets software components talk to each other. Learn how APIs work, the main types (REST, GraphQL, SOAP, gRPC), and why not every API is a web API.

Jul 5, 202621 min readbeginnerEmanuel De Almeida