An XML sitemap is a file that lists the pages on your website that you want search engines to know about. It does not control rankings, and it does not force a page into the index. Google treats a sitemap as a hint about which URLs exist and may be worth crawling. An SEO company manages that file so the hint is clean, accurate, and consistent with the rest of your site. When you ask how a company handles sitemaps, you are really asking whether they treat the file as a maintained asset or as something generated once and forgotten.
What the sitemap should and should not contain
The first thing a competent SEO company does is decide what belongs in the file. A sitemap should list only canonical URLs that return a 200 status code and that you actually want indexed. It should exclude pages that carry a noindex tag, URLs that redirect, pages blocked in robots.txt, duplicate variants, and thin or low-value pages such as internal search results or filtered category combinations.
The reason for this discipline is consistency. If a page is set to noindex but still appears in the sitemap, you are telling search engines two different things at once. The same problem applies to redirected URLs: listing an old address that now points elsewhere wastes a crawl hint on a path you no longer use. Google has treated redirected URLs in sitemaps as a higher-priority warning, so an SEO company will check that every listed URL resolves directly to a live, indexable page. A good rule is that the sitemap should mirror your canonical and internal linking logic rather than contradict it.
Keeping the sitemap current and accurate
A sitemap is only useful if it reflects the site as it exists today. For most sites, an SEO company sets up a dynamically generated sitemap that updates automatically when pages are added, removed, or changed. This is the better option for blogs, ecommerce catalogs, and any site that publishes regularly, because a static file created by hand will drift out of date quickly.
Whether the file is dynamic or manual, the company should audit it periodically for stale entries: deleted pages still listed, URLs that have started redirecting, or pages that were recently set to noindex. Many content management systems and SEO plugins handle sitemap generation, but they still need oversight, since default settings often include pages that should be excluded.
File limits and sitemap index files
A single sitemap file is limited to 50,000 URLs and 50MB uncompressed. Sites larger than that need to be split into multiple sitemap files. An SEO company groups those files in a logical way, often by content type or section, such as one file for products, one for blog posts, and one for core pages.
To manage multiple files, the company creates a sitemap index file. This is a master file that references each individual sitemap, so you can submit one URL instead of many. Splitting the sitemap this way also makes troubleshooting easier, because Search Console reports coverage and errors per file, which helps isolate where indexing problems are coming from.
Submitting and monitoring through Search Console
After the file is built, the SEO company submits the sitemap, or the sitemap index file, through Google Search Console and references it in the robots.txt file. Submission does not guarantee crawling or indexing, but it tells Google where the file is and lets you monitor it.
The ongoing work is monitoring. Search Console reports whether the sitemap was read successfully, how many submitted URLs were indexed, and which URLs were excluded and why. An SEO company reviews this regularly and treats a gap between submitted and indexed pages as a signal to investigate, rather than as a number to ignore. They also avoid common mistakes such as listing URLs from a different domain, leaving broken links in the file, or submitting a sitemap that has not been updated since launch.
Handled well, the sitemap is a small but steady part of technical SEO: a clean, current list that helps search engines find your important pages efficiently and gives you a clear place to spot indexing problems early.