What is a Trigger?

A Trigger in Salesforce is a piece of Apex code that executes before or after specific database events on a Salesforce object. These events include:

• Insert
• Update
• Delete
• Merge
• Upsert
• Undelete

For example, you can write a trigger that automatically updates a related record whenever a new contact is inserted.

Types of Triggers

• Before Triggers: Run before the record is saved to the database. Useful for validating or modifying data.
• After Triggers: Run after the record is saved. Useful for accessing system‑set values (like record IDs) or making changes in related records.

Trigger Syntax (Basic Example)

apex

trigger AccountTrigger on Account (before insert, after update) {
    if (Trigger.isBefore && Trigger.isInsert) {
        // Logic before inserting an Account
        for (Account acc : Trigger.new) {
            acc.Name = acc.Name + ' - Verified';
        }
    }
    if (Trigger.isAfter && Trigger.isUpdate) {
        // Logic after updating an Account
        System.debug('Account updated: ' + Trigger.new);
    }
}

Best Practices

• Bulkify your triggers: Always handle multiple records at once to avoid governor limit issues.
• One trigger per object: Keep logic organized and avoid conflicts.
• Use helper classes: Move business logic out of triggers into Apex classes for cleaner code.
• Avoid recursion: Implement safeguards to prevent infinite loops when triggers call updates that re‑fire themselves.

Triggers vs. Flows

Salesforce now recommends using Flows for most automation because they are declarative and easier to maintain. However, triggers are still essential when:

• Complex logic cannot be achieved with Flows.
• You need fine‑grained control over database operations.
• Performance optimization is critical.

Conclusion

Triggers are a powerful tool in Salesforce development, enabling custom automation at the database level. While Flows are increasingly the go‑to solution, mastering triggers ensures you can handle advanced scenarios and build robust, scalable solutions.

👉 Roopesh, since you’re already strong in Apex and LWC, you could enrich this article by adding real‑world trigger scenarios (like case escalation or Health Cloud patient updates). That would make your blog stand out for both developers and admins.

Would you like me to draft a follow‑up article comparing Triggers vs. Flows vs. Process Builder in a table format? That’s a hot topic in the Salesforce community.