Which Azure service allows for the ingestion of millions of events per second?

The option that allows for the ingestion of millions of events per second is Azure Event Hubs. This service is designed specifically for managing large-scale telemetry and event data, making it ideal for scenarios where real-time analytics and big data processing are essential.

Azure Event Hubs serves as a highly scalable data streaming platform and event ingestion service. It is capable of handling massive amounts of events generated by various sources, such as IoT devices, applications, or logs, without compromising on throughput. This high-performance capability enables applications to perform real-time analysis on incoming data.

In contrast, Azure Functions and Azure Logic Apps are more oriented towards executing workloads in response to specific triggers or integrations but do not specialize in high-throughput event ingestion. Azure Virtual Machines provide compute resources that can run various workloads but do not inherently focus on event ingestion at the scale that Event Hubs does. Thus, when you need a solution specifically tailored for ingesting high volumes of data efficiently, Azure Event Hubs is the go-to choice.