Amazon S3
441,470 websites

Amazon S3 costs money

https://aws.amazon.com/s3/

Amazon Simple Storage Service (Amazon S3) is object storage with a simple web service interface to store and retrieve any amount of data from anywhere on the web.

VS

Fastly
507,204 websites

Fastly is free to use

http://www.fastly.com/

Real-time Analytics and CDN platform. Analyze your web and server traffic patterns in real-time

Market Share by Top Websites

1 Fastly is leading in The Entire Web.

2 Amazon S3 is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

Websites Categories

1 Amazon S3 has better usage coverage in more websites categories. Including Science & Education, Arts & Entertainment, Lifestyle, Business & Consumer Services and 18 other categories.

2 Fastly is leading in Computers Electronics & Technology and Games.

Geography

1 Fastly is leading in most countries, including United States, United Kingdom, Canada, Germany and 140 other countries.

2 Amazon S3 is leading in Pakistan, Romania, Peru, Venezuela and 17 other countries.