Here is a good one-liner from Google's John Mueller on the technicalities of the Google index. John said on Twitter
Search Geek
SEO Consultant at G-Squared Interactive focused on Google algorithm update recovery, technical SEO audits, and SEO training. Columnist at Search Engine Land.
The Twitter profile of Dave Davies covering mainly onsite SEO and PPC, with a healthy dose of ML.
#Marketing, #Content, #Migration, #Google, #Tech, #AI. Opinions are my own