Final answer:
Extranets have evolved to include various types enabling business and private communication online, including Social Networking Sites, Bookmarking Sites, Social News Sites, Media Sharing Sites, Microblogging Sites, and Online Forum Sites.
Step-by-step explanation:
When discussing the major types of extranets, it's essential to consider the evolution and expansion of computer networks. Over the years, from the initial ARPANET that connected government and academic institutions to the commercialization of the Internet, various types of extranets have emerged to facilitate business operations and private communications between companies and their stakeholders. Here, we focus on the types that are particularly relevant to today's digital environment.
Each of these extranet types has facilitated the formation of vast virtual communities that have become integral to both our social lives and professional exchanges.
As the Internet commercialized, extranets evolved to support various aspects of business operations and private interactions among companies and their stakeholders.
In today's digital landscape, several major types of extranets have emerged, each contributing to the formation of extensive virtual communities that influence both social and professional realms.