Time To Interactive (TTI) is a web performance metric that measures how long it takes for a web page to become fully interactive for users. This means the time from when a user first requests the page until they can interact with it, such as clicking buttons or filling out forms. A lower TTI indicates a better user experience, as it allows users to engage with the content more quickly. TTI is an important aspect of web development and is often used alongside other metrics like First Contentful Paint (FCP) and Largest Contentful Paint (LCP). By optimizing TTI, developers can enhance the overall performance of their websites, leading to increased user satisfaction and potentially higher conversion rates.