What is API?
An API (Application Programming Interface) is a set of rules that lets different software applications communicate, allowing one program to use the features or data of another.
Example
A weather app shows a forecast by calling a weather service’s API instead of collecting the data itself.
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Related terms
Cloud Computing
Cloud computing is the delivery of computing services-servers, storage, databases, and software-over the internet, so users can access resources on demand without owning hardware.
SaaS
SaaS (Software as a Service) is a model where software is hosted in the cloud and accessed via subscription over the internet, rather than installed and owned outright.