XML Sitemap Optimisation

Using Rel Alternate in XML Sitemap

 

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
  xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <url>
    <loc>http://www.example.com/english/</loc>
    <xhtml:link 
                 rel="alternate"
                 hreflang="de"
                 href="http://www.example.com/deutsch/"
                 />
    <xhtml:link 
                 rel="alternate"
                 hreflang="de-ch"
                 href="http://www.example.com/schweiz-deutsch/"
                 />
    <xhtml:link 
                 rel="alternate"
                 hreflang="en"
                 href="http://www.example.com/english/"
                 />
  </url>
</urlset>