Loop

In WordPress, the "Loop" refers to the PHP code structure used to display posts dynamically on a site, iterating through the database to output each post's content based on specified criteria. This fundamental element of WordPress theme development is crucial for customizing how posts appear on the front end, impacting both user experience and SEO by ensuring that content is displayed in a coherent, accessible manner. Efficient use of the Loop can enhance site performance and search engine visibility by enabling developers to control the presentation and order of content, optimizing for keywords and user engagement.