--- title: "API Gateway glossary" slug: "apigw-glossary" tags: ["API Gateway"] updated: 2026-09-17T09:17:40Z published: 2026-09-17T09:17:40Z canonical: "guide.ncloud-docs.com/apigw-glossary" stale: true --- > ## Documentation Index > Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # API Gateway glossary Available in Classic and VPC There are a few terms you need to know to use API Gateway. The terms and their descriptions are as follows. ### Representational State Transfer (REST) Methodology that assigns unique URIs to all resources that exist on the web such as images, videos and databases, and uses them. It defines resources and specifies their locations. ### RESTful API API designed in compliance with the REST principles ### Method Pre-designated operation method to be used when web servers send request and response data from HTTP protocols. W3C defines 8 methods, including GET and POST. ### Schema Writing on the properties that display an object's characteristics, objects made up of a bundle of properties, definition of relationships that exist between objects, and restrictions that they must maintain ### Application Programming Interface Gateway (API Gateway) A NAVER Cloud Platform service that provides a monitoring dashboard and various management features to help stable API calling ### JavaScript Object Notation (JSON) Lightweight text-based open standard format designed for the exchange of data that can be read by humans ### Query Processing at the web client's request asking to show specific information on the web server ### HyperText Transfer Protocol (HTTP) Communication protocol used to transfer documents between a web server and the user's Internet browser ### Hypertext Transfer Protocol Header (HTTP Header) Often referred to as the HTTP header, it includes requests sending to web servers and metadata explaining the request data, and can transfer the name and value specified Note To see a full list of terms and definitions, go to [Glossary](https://www.ncloud.com/guideCenter/glossary) from the NAVER Cloud Platform portal.