Fastly, Inc. operates an edge cloud platform for processing, serving, and securing its customer's applications in the United States, the Asia Pacific, Europe, and internationally. The edge cloud is a category of Infrastructure as a Service that enables developers to build, secure, and deliver digital experiences at the edge of the internet. It is a programmable platform designed for web and application delivery.

The company offers [email protected]; network services to speed up and optimize the delivery of web and application traffic; device detection and geolocation; content delivery network, such as dynamic site acceleration, origin shield, instant purge, surrogate keys, programmatic control, content compression, reliability, and modern protocols and performance services; and streaming solutions and services, including live streaming and media shield. It also provides edge security solutions, such as DDoS protection, next-gen WAF, bot protection, API and ATO protection, advanced rate limiting, and compliance services; transport layer security (TLS) and platform TLS; and origin connect. In addition, the company offers edge applications, such as load balancers and image optimizers; video on demand; and edge delivery services.

It serves customers operating in digital publishing, media and entertainment, technology, online retail and education, SaaS, travel and hospitality, and financial services industries. The company was formerly known as SkyCache, Inc. and changed its name to Fastly, Inc. in May 2012. Fastly, Inc. was incorporated in 2011 and is headquartered in San Francisco, California.