Caching is a process of storing the data in a cache. A cache is a temporary storage location that can be accessed very quickly. This process is used on websites to improve performance by reducing the time it takes to fetch data from the server.
When a user visits a website, elements like images and more will be cached into the browser to speed up the future visitors' experience. It reduces load time and improves user experiences. It also reduces the server load and the bandwidth usage so the users can access the content they are looking for at a faster speed.