Based on the research, in Prefect 3.x, you can trigger a flow based on another flow's completion using Automations. Here's how it works: 1. Via the Prefect UI: - Navigate to the Automations page - Create a new automation - Select "Flow run state change" as the trigger - Configure the conditions (e.g., specific flow name and "Completed" state) - Select the flow you want to trigger as the action 2. Programmatically using the API:

python
from prefect.client.orchestration import get_client
from prefect.client import PrefectClient
from prefect.events import Event

async def create_automation():
    async with get_client() as client:
        await client.create_automation(
            name="Trigger Flow B on Flow A completion",
            trigger={"type": "flow_run_state_change", 
                    "flow_name": "Flow A",
                    "state_names": ["Completed"]},
            actions=[{
                "type": "run_deployment",
                "deployment_name": "your-deployment-name/tag"
            }]
        )

Key points to remember: - Automations provide a flexible way to create event-driven workflows - You can trigger flows based on various states (Completed, Failed, etc.) - Flows remain independent and can run on different infrastructure - You can set up multiple triggers and conditions for sophisticated automation patterns For more detailed information, you can check out: - The Automations documentation: https://docs-3.prefect.io/v3/concepts/automations - Workflow design patterns: https://www.prefect.io/blog/workflow-design-patterns Would you like me to provide more specific examples for your use case or explain any part of this in more detail?

Let me break down the key differences and similarities between quick runs and cron-scheduled runs: ### Similarities 1. Code Execution: - The actual code execution remains identical - Both use the same deployment configuration and infrastructure - Environment variables and dependencies are handled the same way - Flow logic and task execution patterns remain consistent 2. Environment: - Both types of runs use the same environment configuration - Infrastructure settings (like Docker containers or Kubernetes pods) remain consistent - Access to resources and dependencies is identical ### Key Differences 1. Initiation Method: - Quick Runs: Manually triggered, immediate execution - Cron Runs: Automatically triggered based on schedule 2. Scheduling Behavior: - Quick Runs: One-off executions without future planning - Cron Runs: Predictable, recurring executions with up to 100 days of future runs created 3. Use Cases: - Quick Runs: - Testing and debugging - Ad-hoc analysis - Immediate response to events - Development and validation - Cron Runs: - Regular data processing - Scheduled reporting - Automated maintenance tasks - Periodic data synchronization 4. Operational Aspects: - Quick Runs: Require manual intervention, better for development - Cron Runs: Automated, better for production workloads ### Important Notes - The actual flow execution remains identical - the differences are primarily in how and when the flow is triggered - Both types can be monitored and tracked in the same way through the Prefect UI - Both support the same logging and observability features - You can use the same flow code for both quick runs and scheduled runs For more detailed information about schedules in Prefect, you can refer to the documentation at: https://docs-3.prefect.io/v3/concepts/schedules Would you like me to elaborate on any specific aspect of these differences or provide examples of how to set up either type of run?