Market Share by Top Websites

1 IIS is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Varnish is clearly lagging behind, losing to IIS in all segments.

Websites Categories

1 IIS has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Internet & Telecom, Shopping and 223 other categories.

2 Varnish is leading in People & Society, Domain Names & Register, Mobile Developers, Social Sciences and 13 other categories.


1 IIS is leading in most countries, including United States, China, Brazil, Great Britain and 172 other countries.

2 Varnish is leading in Timor-leste, Sweden, Germany, France and 56 other countries.