Every React app is composed of interacting components. How these components communicate is an essential aspect of the UI architecture. As applications grow larger and more complex, component interaction becomes even more important.

React provides several methods for handling this need, each with its appropriate use cases. Let’s begin with the simplest approach, parent-to-child interaction.

The simplest form of communication between components is via properties — usually called props. Props are the parameters passed into child components by parents, similar to arguments to a function.

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