Which AWS Support plan includes infrastructure event management at no additional cost?

Explanations:

AWS Basic Support does not offer Infrastructure Event Management or any proactive support features. It is primarily designed for general customer inquiries and does not include access to technical support.

AWS Business Support includes some enhanced features but does not include Infrastructure Event Management at no additional cost. It is more suited for businesses that require technical support but lacks the full range of services offered by the Enterprise Support plan.

AWS Enterprise Support includes Infrastructure Event Management at no additional cost. This plan is designed for customers with critical workloads, providing comprehensive support and proactive services, including events management to help plan for and manage significant events affecting their infrastructure.

AWS Developer Support provides basic technical support but does not include Infrastructure Event Management. It is intended for developers testing or experimenting with AWS services and does not offer the comprehensive features available in the Business or Enterprise Support plans.