Which Azure service should a software company use to receive recommendations for cost savings and high availability?

Azure Advisor is the correct choice because it provides personalized recommendations to optimize Azure resources for cost savings, high availability, performance, security, and operational excellence. It analyzes your deployed resources and suggests actions to improve their efficiency and reliability. Azure Automation is used for automating tasks and processes. Azure Sentinel is a cloud-native Security Information and Event Management (SIEM) solution for threat detection and response. Azure Logic Apps are used for building automated workflows and integrations between applications and services. These services do not primarily focus on providing recommendations for cost savings and high availability in the way Azure Advisor does.