Cache Storage is a web technology that allows browsers to store data locally on a user's device. This data can include images, scripts, and other resources from websites. By saving this information, browsers can quickly retrieve it when a user revisits a site, improving load times and overall performance. The Cache Storage API provides developers with a way to manage cached data programmatically. This means they can add, update, or delete cached resources as needed. Using cache storage helps enhance user experience by reducing the amount of data that needs to be downloaded each time a website is accessed.