Google is confirming fewer and fewer search algorithm updates, but that doesn't mean there is less ranking volatility.

Google has a long history of famous algorithm updates, search index changes and refreshes. Here is a timeline of major Google search algorithm updates. Want to read our latest coverage of algorithm ...

Google recommends hosting website resources on CDNs or subdomains to preserve main site's crawl budget for better indexing. Googlebot caches resources for 30 days, regardless of HTTP cache settings.