A Good Example of the Scalability of Serverless from Microsoft Azure
This recent article from the Microsoft App Service team describes a test scenario they ran on Azure Functions over 9 days. During that time it processed 76 billion events at a throughput of 100,000/s!
The consumption plan for Azure Functions is capable of scaling your app to run on hundreds of VMs, enabling high performance scenarios without having to reserve and pay for huge amounts of compute capacity up front. To learn more about Azure Functions and building cloud applications on serverless technology, start here.