''Semantic Markup' refers to the correct interpretation of the meaning of a word or sentence. It is simply text data that is annotated using a special language to offer another meaning to the text. It uses HTML Markup to comprehend the necessary information on a page and reinforce a webpage's semantics. An example includes using < title > to define the document and to show it in the browser's titles bar or a page's tab.
Section 508 - Accessibility
Section 508 of the Rehabilitation Act is law that was passed in 1973 that requires all federal agencies to make their ICT (Information & Communications Technology) accessible to anyone with a disability. This means that everyone will have access to the same technologies. Section 508 was put in place to prevent discrimination.
Search Engine Optimization
Search Engine Optimization is process of maximizing the number of visitors to a particular website by having the site appear higher on the list of results returned from the engine. Search engines are considered extremely important because of the purpose they serve for websites because of how quickly it can attract customers. They work by processing any keywords, links, titles you may have searched and detecting where they are used the most.
How are they all related?
These three factors are correlated in that one, cannot function without other.All of three of these have one goal and that is to provide a form of communication with the user and the data. In addition to this, Semantic Markup must include the Section 508 Act, which ensures that those with a disability are provided with the same and equal access to any form of technology.