How do you decide between synchronous commit mode and asynchronous commit mode for a specific replica in an Always On Availability Group?

Synchronous commit mode waits for a secondary replica to confirm it has received and written the transaction before the primary considers the transaction complete, guaranteeing zero data loss but adding some latency, while asynchronous commit mode does not wait, offering better performance but with a small risk of losing recent transactions if the primary fails unexpectedly.

ALTER AVAILABILITY GROUP MyAG
MODIFY REPLICA ON 'ServerB' WITH (AVAILABILITY_MODE = SYNCHRONOUS_COMMIT);

ALTER AVAILABILITY GROUP MyAG
MODIFY REPLICA ON 'ServerC' WITH (AVAILABILITY_MODE = ASYNCHRONOUS_COMMIT);