Explanation
Box 1: Record Creation and Update rule
Reduce the need for manually creating cases from incoming emails and increase the efficiency of customer service agents by creating automatic case creation rules in Dynamics 365 Customer Service.
Box 2: Routing Rule
Unified routing is an intelligent, scalable, and enterprise-grade routing and assignment capability that can direct the incoming work item to the best-suited queue and agent by adhering to work item requirements and matching them with the agent's capabilities.
Reference:
https://docs.microsoft.com/en-us/dynamics365/customer-service/automatically-create-case-from-email
https://docs.microsoft.com/en-us/dynamics365/customer-service/overview-unified-routing