https://www.123articleonline.com/rss/author/251614/surya-rajeevArticles written by Surya Rajeev from 123ArticleOnline.comen-usCopyright (c) 123ArticleOnline.com All rights reserved. https://www.123articleonline.com/articles/1117125/osi-reference-model-and-layers OSI Reference Model - OSI was developed by the International Organization for Standardization (ISO) and introduced around 1980. It is a layered architecture (consists of seven layers), which defines and explains how communication happens in between two or more network devices within the organization or the Internet. Each layer defines a set of functions in data communication.