Browser storage refers to the various methods that web browsers use to store data on a user's device. This allows websites to save information like user preferences, session data, and other relevant details, enhancing the browsing experience. Common types of browser storage include cookies, localStorage, and sessionStorage. Cookies are small text files that websites use to remember user information, while localStorage provides a way to store larger amounts of data persistently. SessionStorage, on the other hand, is temporary and only lasts for the duration of a browser session. Together, these storage options help improve website functionality and user experience.