IBM Cloud® Internet Services Edge functions allow you to create or modify existing applications,

without having to configure or maintain infrastructure, by using a serverless execution environment.

Edge functions run on CIS edge servers, not in the user’s browser. That means you can trust that your

code runs in a trusted environment where it cannot be bypassed by malicious clients. It also means

that the user does not need to be using a modern browser that supports service workers – you can

even intercept requests from API clients that aren't browsers. Edge Functions allows you to run code

closer to users of your public-facing applications or websites. In turn, you can improve your

application's performance and reduce latency. This means you can quickly create new applications or

modify existing ones without having to configure or maintain infrastructure via our serverless

execution environment. Once a new application is deployed or an existing application is modified, it

takes us ~15 seconds to get the changes distributed globally to our 180+ PoPs worldwide.