IIS vs LiteSpeed

LiteSpeed is used by more websites in our catalog: 14,679 use IIS and 43,161 use LiteSpeed.

IIS sites have the higher median Ahrefs Domain Rating (IIS: 35, LiteSpeed: 15).

Between 2026-06 and 2026-07, IIS went from 1.8% to 1.7% of all tracked sites, while LiteSpeed went from 5.4% to 4.9%. IIS is gaining ground faster in our index.

0 websites in our catalog use both IIS and LiteSpeed.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.