do you mean zone as in cloudflare zone/website or zone as in some sort of geographical region
do you mean zone as in cloudflare zone/website or zone as in some sort of geographical region

Smart Placement is enabled on a per-Worker basis. Once enabled, fetch requests (also known as subrequests) from your Worker are analyzed regularly. The Smart Placement algorithm determines the optimal placement to minimize the round-trip time (RTT) between the Worker and the back-end service the Worker is communicating with.https://developers.cloudflare.com/workers/configuration/smart-placement/
Smart Placement is only active for Workers that make more than one roundtrip to back-end infrastructure. If your Worker does less than one subrequest on average, Smart Placement will run the Worker at the data center closest to the user.
Smart Placement is a best-effort attempt. Smart Placement will not take action unless it is more performant than the default (which is running the Worker at the data center closest to the user).
Smart Placement only affects the execution of fetch event handlers. Workers without a fetch event handler will be ignored by Smart Placement. For Workers with both fetch and non-fetch event handlers, Smart Placement will only affect the execution of the fetch event handler.



if you don't check the response or have logici catch all possible "thrown" errors into error as value (Result<T,E>) in ts and deal with them explicitly (im coming from rust to ts but dont use rust for workers as wasm on workers is not there yet)