I am new to Azure. Does anyone know the basic difference between VMSS and Azure Batch. I have studied the material on the Microsoft website, and there indeed is a difference, but the terms are complicated for me as a beginner. Can anyone please explain the difference in simple terms along with an example?
MANY THANKS.
Azure VM Scale Set is intended to scale in and scale out your VM.
For example: if we have VM A which runs our application and we start experiencing load, then if VM A is part of a scale set, Azure will spin up another VM (VM B) with the same application, so the load is distributed. When the load reduces, VM B will be "removed". The scale set gave you elasticity. Example for using a scale set - we have a service that handles user registrations for a web application.
Azure Batch is intended for a different purpose. First, a VM is always up and have some application running on it. With Azure Batch we are interested in performing a compute-intensive task and distribute the calculations across the nodes in the batch.
For example, run a daily job that requires 60 VMs to perform in a reasonable time. After the job finished, the VMs are deallocated. Note that Azure batch is not a good fit for the user registration service - as this is something that takes many small request, not computation
So Azure batch is a service that spins off VMs, it can manage them (e.g what if one node fails) and a specific task that requires high computing power is run.
