You are designing an event-driven processing platform. It must handle bursty traffic (millions of events/day), perform long-running orchestrations, and access resources over private endpoints in a VNet without cold starts. Triggers include Service Bus and HTTP. Which hosting option and features should you use?

The Premium plan for Azure Functions supports pre-warmed instances, eliminating cold starts, and offers VNet Integration for secure access to resources over private endpoints. Durable Functions are ideal for long-running orchestrations, and Service Bus triggers efficiently handle bursty event-driven traffic. The Consumption plan experiences cold starts and Hybrid Connections are not the primary method for VNet access for Functions. A Dedicated (App Service) plan is less cost-effective for event-driven scaling, and manually scaling is inefficient for bursty traffic. Logic Apps Consumption has limitations for complex orchestrations and custom code, and its VNet integration capabilities are different from Functions.