The standard markup language for creating web pages is HTML (Hypertext Markup Language). HTML structures content on the internet, allowing developers to define elements such as headings, paragraphs, images, and links. By using HTML, creators can design user-friendly interfaces that enhance navigation and accessibility. It's often paired with CSS (Cascading Style Sheets) for styling and JavaScript for interactivity. Understanding HTML is fundamental for web development, as it serves as the backbone for most websites, enabling effective content delivery.