"Shawn, let's talk about one more technique of handling data in a component, state. Every component can have its own state in React. The main difference between state and props is that props are passed to the component from the parent component; whereas, state is something that is internal to the component.

Props are passed when a component gets instantiated. State is something that can change over time. Therefore, changes in state affect the rendering of components. Consider state as some sort of private data structure of the component." Mike added.

"Mike, but then we have not used state at all until now. We were just using props." Shawn asked.

"True. That is because state should be introduced only when it is required. You already know managing state is hard. As we were playing with static data of ChangeSets API, we didn't require state. However, we will need it very soon." Mike added.