An API is a set of definitions and protocols for building and integrating application software. API stands for application programming interface.
APIs are sometimes thought of as contracts, with documentation that represents an agreement between parties: If party 1 sends a remote request structured a particular way, this is how party 2s software will respond.
APIs are a simplified way to connect your own infrastructure through cloud-native app development, but they also allow you to share your data with customers and other external users. Public APIs represent unique business value because they can simplify and expand how you connect with your partners, as well as potentially monetize your data
APIs let your product or service communicate with other products and services without having to know how they are implemented. This can simplify app development, saving time and money. When you are designing new tools and products or managing existing ones APIs give you flexibility; simplify design, administration, and use; and provide opportunities for innovation.
APIs let your product or service communicate with other products and services