Difference between Async BR and Script Action

[Priyanka_Ghosh]

Hello,

Could anyone help me know the difference between Async BR and Script actions.

I understand that both of them are asynchronous and Async BR executes on any record level changes and Script actions executes when event is triggered. But I want to know the difference in terms of use-cases.

-Thanks.

[Sandeep Rajput]

@Priyanka_Ghosh 

Async Business Rules are used to execute scripts after a record is inserted, updated, or deleted, but they run in the background and do not impact the user's experience.

Use cases:
Logging data changes for auditing purposes
Updating related records without delaying form submission
Sending notifications or emails asynchronously

Script Action: Script Actions execute scripts in response to events (from event queues). They are more flexible since they aren’t tied to a specific table and can be triggered by multiple sources.

1.Sending custom email notifications
2.Creating related tasks when an event occurs
3.Logging user activities in a separate table

[Priyanka_Ghosh]

Hi @Sandeep Rajput ,

Thanks for the response. I understood that script actions are more flexible since they aren’t tied to a specific table and can be triggered by multiple sources, as said. Additionally it can perform more complex logics.

So, can I just conclude that script actions can possibly perform all the use-cases which are doable with Async BR, just that an event needs to be triggered?

[Sandeep Rajput]

@Priyanka_Ghosh Yes, script actions can perform all the use-cases which are doable with Async business rule. 

[Ravi Gaurav]

Hi @Priyanka_Ghosh 
Note Below Data is from Internet :-

Key Differences Summary

Feature	Async Business Rule	Script Action
Trigger Mechanism	Runs after an insert, update, or delete in a table	Runs when an event is fired in the Event Queue
Execution Timing	Asynchronous (background)	Asynchronous (event-driven)
Best for	Record-based changes, background data updates, long-running processes	Event-based actions, notifications, API calls, scheduled jobs
Dependency	Works only with record changes	Works based on events, independent of records
Performance Impact	Minimal impact on user experience	Minimal impact as it runs asynchronously

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Which One Should You Use?

🔹 Use Async Business Rules when you need to process record updates in the background.
🔹 Use Script Actions when you need to trigger logic based on system events like notifications, API calls, or scheduled tasks.

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Real-World Example Comparing Both

🔸 Scenario: When a high-priority incident (P1) is created, you need to:

1. Assign it to the correct team (Async Business Rule).
2. Send an email notification to the manager (Script Action).

📌 Solution:

• Async BR: Runs after an incident is inserted, updating the assignment group.
• Script Action: Runs when the "incident.p1.created" event is triggered, sending an email.