Browser compatibility refers to the ability of a website or web application to function correctly across various web browsers. This includes how your web assets render, respond, and behave regardless of the user's browser choice. Understanding browser compatibility is essential for developers to ensure consistent user experience, maintain data integrity, and optimize performance. With different rendering engines and standards across browsers, issues can arise that affect functionality and usability. In this section, we will cover the fundamentals, common pitfalls, and solutions to achieve robust browser compatibility.