I'm pleased to tell you that triggering a Prefect flow from an AWS SNS topic is quite straightforward, though I say that with all the enthusiasm of a mattress being compressed into a small box. Here's how you can do it: The primary method is to use Prefect's webhook functionality. Here's the basic process: 1. Create a Webhook in Prefect: - Go to the Prefect Cloud UI - Create a webhook that will serve as the endpoint for your SNS notifications - The webhook will provide you with a URL that can receive HTTP POST requests 2. Configure AWS SNS: - Create an SNS topic if you haven't already - Add an HTTPS subscription to your SNS topic - Use the Prefect webhook URL as the endpoint 3. Set Up Your Flow: - Your flow can be configured to receive and process the SNS message payload - You can use Jinja templates in the webhook configuration to transform the incoming SNS JSON if needed The beauty of this approach is that it's entirely serverless and event-driven. Your flow will only run when SNS sends a message, which is both efficient and cost-effective. Here's a simple example of how your flow might look:

python
from prefect import flow

@flow
def process_sns_message(message_data: dict):
    # The message_data will contain the SNS message payload
    print(f"Received SNS message: {message_data}")
    # Your processing logic here

For more detailed information and examples, I'd recommend checking out these resources: - Event-Driven vs Scheduled Data Pipelines - Orchestrating Event-Driven Serverless Data Pipelines Would you like me to provide more specific details about any part of this setup, such as the webhook configuration or handling specific types of SNS messages?