Google Crawler is really essential for the online businesses as it automatically discovers and scans websites by following links from one webpage to another. For this the Sitemap.XML proves to be useful but recently we asked a question to Gary Illyes & John Muller of Google that, “Does #sitemap.xml frequency matters for #Google Crawler?
To this, Gary responded saying, “No”.
— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) April 20, 2017
So to conclude from the above conversation, it has been clearly stated by Google that the crawler isn’t affected by the frequency (Hourly, Weekly, Daily, Monthly, Yearly, Never) of the Sitemap.XML file. Maybe, this could help digital agencies shift their focus to the elements that affect crawler.