There are several factors that contribute to how quickly Stack Overflow's pages are indexed by search engines:
Overall, Stack Overflow's combination of high domain authority, active community, good SEO practices, and XML sitemap submission likely contribute to the quick indexing of its pages by search engines.
In addition to the points mentioned above, there are a few more factors that contribute to the fast indexing of Stack Overflow pages:
Overall, the combination of these factors helps Stack Overflow pages get indexed quickly by search engines.
Yes, you're correct. The factors you mentioned, such as page load speed, social sharing and backlinks, freshness of content, and site architecture with internal linking, all contribute to the fast indexing of Stack Overflow pages. These factors help search engines understand the relevance and value of the content, leading to quicker indexing. Additionally, Stack Overflow's high popularity and reputation in the programming community also play a role in search engines prioritizing the indexing of its pages.