In external functions, where is the code executed and input relayed?

• A. Outside Snowflake (Remote Service) with input relayed through a proxy service
• B. Inside Snowflake; no proxy
• C. In a client browser; via REST calls
• D. In a scheduled task within Snowflake

Answer: (A)

External functions run code outside Snowflake. When you call one, Snowflake forwards the input to a remote endpoint through its built‑in proxy layer, the external function executes in that remote service (such as a cloud function or HTTP endpoint), and the result is sent back through the proxy to Snowflake to return to the caller. This means the execution happens outside Snowflake, and the input is relayed via the proxy to the remote service.

That’s why options that place execution inside Snowflake, in a browser, or in a Snowflake‑scheduled task don’t fit.