State transition refers to the process of changing from one condition or state to another. In various fields, such as computer science and physics, this concept helps to describe how systems evolve over time. For example, a simple light switch can be in an "on" or "off" state, and the action of flipping the switch causes a transition between these two states. In software development, state transitions are crucial for managing the behavior of applications. For instance, a user interface might change its appearance based on the user's actions, like clicking a button. Each action triggers a state transition, allowing the application to respond dynamically to user input.