Tech-SEO Update: URL Hygiene, Redirects, hreflang, AMP, Rich Cards, HTTP/2, Site Speed, Crawl Gap Analysen, neue Bildformate, uvm.

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27. We are using AMP in mobile search rankings: You
may have heard that here at Google we're obsessed
with speed. As part of that effort, today we're
including a new signal in our search ranking
algorithms: The usage of accelerated mobile pages
(AMP) for even faster results in mobile search results!
„

29. Rudy Galfi, Google’s lead product manager for AMP, told me that the global
rollout would be complete by the end of the year. He reiterated that this does not
represent a rankings change. AMP pages won’t get a special boost in mobile
results. However, when there are two versions of a page, Google will prefer and
link to the AMP version. AMP pages open within the AMP viewer and load much
faster than conventional web pages — typically in less than a second.
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42. If you are using HTTPs
without HTTP/2 (SPDY) you
are doing it all wrong!
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74. As Googlebot is currently configured, it will halt all crawling of
the site if the site’s robots.txt file returns a 503 status code for
robots.txt. This crawling block will continue until Googlebot
sees an acceptable status code for robots.txt fetches. This is a
built-in safety mechanism so that Googlebot doesn't end up
crawling content it's usually blocked from reaching.
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