* Account Trigger:
* Apex triggers allow for complex logic to retrieve and update the Timezone field based on PostalCodeToTimezone__c.
* Fast Field Updates Record-Triggered Flow:
* A record-triggered flow in Fast Field Updates mode can fetch the necessary data from PostalCodeToTimezone__c and update the Account.
* Why Not Other Options?
* A. Quick actions: Used for user interface updates, not for automation based on edits.
* B. Approval process: Not relevant to dynamic field updates.
* Record-Triggered Flow: https://help.salesforce.com/s/articleView?id=sf.flow_build_trigger.htm References: