Market Share by Top Websites

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

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

Websites Categories

1 IIS has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Internet & Telecom, Shopping and 211 other categories.

2 Varnish is leading in People & Society, Domain Names & Register, Games, Video Games and 26 other categories.


1 IIS is leading in most countries, including United States, China, India, United Kingdom and 146 other countries.

2 Varnish is leading in Russia, France, Brazil, Japan and 64 other countries.