Google introduced Google Tag Manager. When following the 4 steps to create it, the keyword and website URL are optional. I created a container without keyword and URL, but it gave me the following script code and said to paste it to all the website pages.  What is the benefit for me?<!-- Google Tag Manager --><noscript>    <iframe src=//www.googletagmanager.com/ns.html?id=GTM-6Q96height=0 width=0 style=display:none;visibility:hidden></iframe></noscript><script>    (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':        new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],        j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=        '//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);    })(window,document,'script','dataLayer','GTM-6Q96');</script><!-- End Google Tag Manager --> This code is not related to my domain and keyword.
Are there any SEO benefits by using Google Tag Manager?
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