API와 엔드포인트란?

APIs and endpoints come as a pair: an API(애플리케이션 프로그래밍 인터페이스)는 서로 다른 소프트웨어 애플리케이션이 정보를 교환하고 협력적으로 작업할 수 있도록 하는 지침과 표준의 모음입니다. 한 애플리케이션이 다른 애플리케이션이 소유한 기능이나 데이터를 직접 사용할 수 있는 연결 역할을 합니다. Each web request returns a status code, such as 200 OK on success.

엔드포인트는 API에서 특정 목적이나 기능을 보여주는 URL 또는 주소입니다. 애플리케이션이 요청을 보내고 API에서 응답을 받는 상호 작용 지점입니다.

API can be defined as an agreement that outlines the relationship between applications. It describes the endpoints, data format, and how to create a request. An endpoint is a certain point or address within the API where a specific action is performed: GET /customers lists customers, while POST /customers creates one, because the HTTP method decides what the same address does.

• API 엔드포인트는 요청과 응답을 처리하는 API 내의 URL을 말합니다.
• A webhook is a specific API URL that receives real-time information or a change in state based on a given event from another application.
• The SDK (Software Development Kit) is a toolset that includes libraries, samples, and other resources to facilitate API 통합. It has pre-built functions and methods that developers employ to engage with the API without developing all the required code.

No, a webhook functions differently than an API. A webhook is a specialized kind of API endpoint developed for the purpose of receiving real-time push notifications from another application. An API is a general set of rules and specifications for communication between applications that can include different kinds of endpoints.

An example of a webhook endpoint is a URL ending in /webhooks/payments, the address where a payment gateway sends a notification to an e-commerce application after a transaction has been completed. Webhooks are always push-based, implying that the source application pushes data to the webhook endpoint when a specific event activates it.

The gateway sends each notification as an HTTP POST, and the endpoint replies with 200 OK to confirm the request succeeded; if no reply arrives, a webhook retry policy resends it.

IPO는 API determines how two or more applications will communicate, while serverless computing is a form of cloud computing where the cloud provider controls and procures computational resources as required. APIs often benefit from a serverless architecture, allowing developers to focus on developing the API’s essential logic without engaging in server management or scaling. A serverless API is billed on a pay-as-you-go model, charging for the actual compute time used during API requests.