I recently presented two sessions at xRMVirtual on building resilient integrations using Polly and Simmy with Dynamics 365.
You can watch the recording of the first session here:
Here’s the recording for the second session:
I would highly recommend going through the following links to develop a better understanding of various resilience strategies and learn about design patterns and anti-patterns as well.
Azure Transient Faults:
Dynamics 365 API Limits: