Cookies are tiny pieces of data that websites send to your browser. Think of them as bookmarks that help sites recognize you when you return. They store information about your visit—things like language preferences, items you've viewed, or whether you're logged into an account.
Most websites use them. Without cookies, you'd need to adjust your settings every single time you visited a page. They make browsing smoother and more personalized.
Some cookies only last for your current session. Others stick around longer to remember you next week or next month. We use both types, depending on what makes sense for the feature.