The impact created, if a product or service is used by more number of individuals as compared to the initial number of customers. It usually adds value to the product or service, which could not have been created if the number of users remained limited.
Diagrams
Originated from/Coined by
Robert Metcalfe
Further Reading/ References
https://en.wikipedia.org/wiki/Network_effecthttps://www.investopedia.com/terms/n/network-effect.asp