Hands-On Serverless Computing

Triggers for AWS Lambda

Triggers are how AWS Lambda gets invoked. Triggers are custom events that happen across different AWS services. With these triggers in place, AWS Lambda will get invoked, process the custom event, and generate the response to the service that has been defined in AWS Lambda. For AWS Lambda to be invoked, you will need to have at least one event source or trigger. You can have multiple event sources or triggers for your Lambda to get invoked. Let's look at the different triggers or event sources that are available for different AWS services.