I'm implementing hreflang on my web app.
Google does not mention anything on https://support.google.com/webmasters/answer/189077?hl=en
But they use it (trailing slashes) on their own Sitemap.
https://www.google.com/sitemap_search.xml
Does it make any difference at all?

<loc>URL</loc>and on<xhtml:link href="URL" ... />. – cbdeveloper May 11 '20 at 08:38<loc>http://example.com/</loc>vs<loc>http://example.com/</loc>and<xhtml:link href="http://example.com/" ... />vs<xhtml:link href="http://example.com" ... />? Are you asking only about your home page or about deep links as well. Do you need advice abouthttp://example.com/pagevshttp://example.com/page/? – Stephen Ostermiller May 11 '20 at 09:23