- User Experience. Search engines want to feature websites that are always available, fast-loading and compatible with any type of device. These qualities promote better user experience, incentivizing repeat usage visits to both the search engine and the websites it refers.
- Bot Crawl Efficiency. Like any other tech company, search engines have finite computing, storage and energy resources. As such, they want to be as efficient in the usage of these resources as they possibly can. By being judicious with the kinds of pages they allow search engines to crawl, websites are often rewarded with greater visibility on the SERPs.
- Safety and Security. It’s in the best interest of every search engine to send its users only to websites that will not compromise their privacy or endanger their devices. As such, Google and other search engines tend to favor websites that use the secure HTTPS protocol. Search engine spiders can also detect malware and spyware, degrading the ability of websites with unwanted software to rank well in their search results.