juniorAPI Design
Difference between Public and Private APIs?
Updated Apr 28, 2026
Short answer
Public APIs are open to any developer; Private APIs are intended for internal use within an organization.
Deep explanation
API Design at the junior level focuses on standards and communication. Public APIs are open to any developer; Private APIs are intended for internal use within an organization. Following REST constraints ensures interoperability and ease of use.
Real-world example
A weather app fetching current temperature from a remote server.
Common mistakes
- Using GET for operations that modify data.
Follow-up questions
- What is a 201 status code?