Company: FSLY
Filing Date: 2025-02-26
Form Type: 10-K
Source: 0001517413-25-000063
Chunk: 19

Company: Fastly, Inc.
Filing Date: 2025-02-26
Form: 10-K
Item: Item 1
Chunk 19
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 a safe, fast execution environment at scale.

•WASM compiler and runtime. To make this code run even faster, we built our own WASM compiler and runtime. 

9

Through our observability offerings, we also provide real-time insights to inform continuous performance improvements and facilitate faster debugging during development. See “Compute” and “Observability” sections below for more details.

Network Services

Fastly is an extension of our customers’ infrastructure. Our Network Services are designed to speed up and optimize the delivery of web and application traffic while ensuring developers and engineers do not lose visibility or control. Whether customers are looking to deliver engaging web and streaming experiences to their users, move apps to the cloud or scale their DevOps practices, our Network Services provide the speed, security and flexibility needed.

Content Delivery Network

•Dynamic Site Acceleration. Speeds up requests and responses between cache nodes in our POPs and customers’ origin servers to serve their dynamic web and mobile content faster.

•Origin Shield. Allows us to designate a specific POP to serve as a shield for a customer’s origin servers. When web content is refreshed and multiple end users request the new content simultaneously, a deluge of requests can hit a customer’s origin server. This can result in poor web or application performance. With Origin Shield, we collapse all these content requests into a single request and hold it in queue at the Origin Shield POP. That allows us to retrieve the new content from the customer’s origin server only once, and then serve it to all end users who requested it. This approach reduces costs for our customers, while improving performance for their end users.

•Instant Purge. Allows customers to clear the cached copy of their content globally in milliseconds, not seconds. We allow customers to send a command to our platform that invalidates an old version of their content throughout our global edge infrastructure. This causes a new version of content to be retrieved from the application server the next time it is requested. This feature enables our customers to serve highly dynamic content at the edge more quickly and allows for delightful application experiences. Rapidly changing content like shopping cart items, flight search results, sports scores, or current weather conditions in any given location can all be served faster from the network edge.

•Surrogate Keys. Allows customers to fine-tune purging by tagging related objects across their site with a key name and description, then purging by that key. They can purge their entire site of a given object or set of objects at once, without impacting performance. For example, they could purge