Application Programming Interface Flashcards, test questions and answers

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What is Application Programming Interface?

An Application Programming Interface (API) is a set of protocols, routines, functions, and tools that enable developers to build software applications. It serves as an interface between different software programs and enables them to interact with each other. An API defines the types of calls or requests that can be made, how to make them, the data formats that should be used, the authentication techniques that should be used and other protocols related to communication.APIs are commonly used for web-based applications such as online stores or banking sites which need communication between components in order to function properly. For example, when a person makes an online purchase from an e-commerce site their credit card information is sent via an API call from their browser to the payment processor’s server where it can be verified and processed. APIs also power mobile applications by allowing developers to access data without having to re-create all of the code required for each request manually.One major advantage of using APIs is that they help create greater consistency in processes across different applications since they provide a defined way for two pieces of software communicate with each other. This reduces the risk of errors due to incompatible interfaces or mismatched expectations which could lead to costly delays or even security issues if left unchecked. Additionally, APIs allow developers more flexibility when creating new features because they don’t have to hardcode everything themselves; instead they can take advantage of existing functionality provided by another application’s API. Overall, APIs provide a powerful tool for developers looking to quickly create highly functional web and mobile applications while ensuring consistent interactions between different services and platforms throughout their codebase.