+Network effects describe how a product or service gains value for existing users as more people use it. This phenomenon creates a powerful [feedback loop](/wiki/feedback_loop), where growing adoption enhances utility, often leading to a dominant market position and exponential growth, as theorized by [Metcalfe's Law](/wiki/metcalfes_law).
+## See also
+- [Lock-in](/wiki/lock-in)
+- [Platform](/wiki/platform)
+- [Critical Mass](/wiki/critical_mass)
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