A sitemap refers to the map of a website. It is the detailed structure of a site that includes different sections of your site with internal links.
For an SEO interview question asking about what a sitemap is, the correct answer would be:
“A sitemap is a file that contains a list of all URLs or web pages on a website. It serves as a roadmap for search engine crawlers to understand the structure and hierarchy of the website’s content. Sitemaps help search engines index web pages more efficiently, ensuring that all relevant pages are included in the search engine’s database. There are two main types of sitemaps: XML sitemaps, which are primarily for search engines, and HTML sitemaps, which are designed for human visitors to navigate the website easily.”