Our company owns about 100 websites, currently all hosted on the same server. If we moved some of them to a new server would they pass link equity? Or would the SERPS recognize that they're from the same umbrella company?
Also, if moving to new servers slows down each site, is it worthwhile?
100 websites is quite a lot. Is the content unique on all of them? If some of them were put on a new server they may pass more link equity, but Google would still know that they are owned by one company, so may discount the links.
If moving servers slows down the sites, then this may well annoy your visitors.