How it works...

We have created a new function using one of the samples named ImageResizer that the Azure Function template provides.

The ImageResizer template takes input from userprofileimagecontainer Blob container where the original Blobs reside. Whenever a new Blob is created in the userprofileimagecontainer Blob, the function will create two resized versions in each of the userprofileimagecontainer-md and userprofileimagecontainer-sm containers automatically.

Following is a simple diagram that shows how the execution of the functions is triggered like a chain: