Once you have built your web site, written all content, added metadata, and set up your URLs exactly as you want, your site is almost ready to be published. Preferably at this stage, but possibly later, you should create a file called sitemap.xml and store it somewhere in your web site, ideally in the root of your site.

The file is meant to help search engines understand the structure of the web site and which URLs are there. If you do not create a sitemap, most engines will be quite capable of sorting out your URLs for themselves, but, usually, they consider it a big plus if you supply one; it makes life easier for them.

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