A. Perform a readiness assessment.
B. Define a model-validation methodology.
C. Document maintenance teams and processes.
D. Identify known edge cases to monitor post-deployment.
Explanation:
After completing model testing and validation, the most important step prior to deploying the model into production is to perform a readiness assessment. This assessment ensures that the model is fully prepared for deployment, addressing any potential issues related to infrastructure, performance, security, and compliance. It verifies that the model meets all necessary criteria for a successful launch. Other steps, such as defining a model-validation methodology, documenting maintenance teams and processes, and identifying known edge cases, are also important but come secondary to confirming overall readiness.
Reference: AIGP Body of Knowledge on Deployment Readiness.