You are developing a software as a service $($SaaS$)$ offering to manage photos. Users upload photos to a web service which then stores the photos in Azure Storage Blob storage. The storage account type is General$-$purpose V$2.$ When photos are uploaded, they must be processed to produce a thumbnail version of the image. The process to produce a mobile$-$friendly version of the image should start in less than one minute.

You need to design the process that starts the photo processing.

Which of the following solutions is the most efficient and meets the goal?

Create an Azure Function App that uses the Consumption hosting model and that is triggered from the blob upload.

Create an Azure Function App that uses a Premium tier and that is triggered by a CRON expression.

Create an API Management service