The explanation in Baidu Encyclopedia is:
SNS, the full name of Social Networking Services, namely social networking services, refers to the internet application services aimed at helping people build social networking sites. It also refers to the existing mature and popular information carriers in society, such as short message service. Another common explanation of SNS: the full name of social networking site, namely "social networking site" or "social network".
Social networking sites (social networking)
Networking refers to the relationship network between individuals. This kind of website based on the idea of social network relationship system is the social networking website (SNS website). SNS also refers to socializing.
Network software, social network software, is the next generation of personal-based network basic software built by using distributed technology, or P2P technology.
Here are some examples to help you better understand the sns model.
component
Tencent: SNS platform based on instant messaging
Baidu: SNS platform based on search
Alibaba: SNS platform based on commercial applications
Yiqiwang: SNS platform based on open social network structure (to be proved by practice)
Kaixin.com, Renren.com, Jiuzun.com and 72-member Apprenticeship.com are SNS platforms based on open social network structure.
business class
Beautiful life network: professional SNS, professional social networking site [3]
Tianji: The features are not obvious.
Contact: Tools Social Network
Domestic: SNS community
5G Social Network: IT Professionals
Create excellence. Com: SNS community of venture capital
These are all using SNS.
I hope this helps.