Page Speed: Page speed refers to the amount of time it takes for a web page to load and display its content to users. It's an essential factor in user experience and search engine optimization (SEO), as faster-loading pages typically lead to higher engagement, better user satisfaction, and improved search engine rankings. Page speed can be measured in multiple ways, such as First Contentful Paint (FCP) and Time to Interactive (TTI), and can be optimized through various methods such as optimizing images, minifying code, and using content delivery networks (CDNs).