Further reading
If you need more information about serverless architecture, you can check out this link: https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-serverless-computing/ and this e-book: https://learn.microsoft.com/en-us/dotnet/architecture/serverless/.
You can check out event-driven architecture documentation at these links: https://learn.microsoft.com/en-us/azure/architecture/guide/architecture-styles/event-driven and https://learn.microsoft.com/en-us/azure/architecture/reference-architectures/serverless/event-processing.