Difference between Azure Service Manager and Azure Resource Manager

ASM

ARM

This is an old portal which provides Cloud
service for Iaas Workload and few specific Paas Workload

They are new portal provides service for all
Workload of IaaS and PaaS

Access over the Url:
https://manage.windowsazure.com
which  termed as V1 portal.

Access over the Url: https://portal.azure.com
which  termed as V2 portal  having Blade design Portal View

Azure Service Manager are XML driven REST API

Azure Service Manager are JSON driven REST API

Had a concept of Affinity Group which has been
deprecated

They have container concept called Resource
Group which is logical set of correlated cloud resources which can span
multiple region and services

Private Azure Portal can be built using
Windows Azure Pack

Private Azure Portal can be built using  Azure Stack

Removal or Deletion is not easy as Azure Resource
Manager

Removal of resource is easier by deleting the
resource group (RSG) which will help to delete all the resource present in
the RSG

Deployment can be performed using PowerShell
script

Deployment can be performed using ARM
templates which provide simple orchestration and rollback function. They have
their own PowerShell Module

Features and function are not available

Role Based Access Control Feature is Present

Features and function are not available

Resource from the resource group can be moved
between within the same region

Features and function are not available

Resource Tagging which is name-pair value
assigned to resource group which can have up to 15 tags per resources

Features and function are not available

Massive and Parallel Deployment of VM’s
possible with Asynchronous Operations

Features and function are not available

We can have custom policy created to restrict
the operation that can be performed

Features and function are not available

Azure Resource Explorer  – https://resources.azure.com/ which helps
for more understanding on resources and for deployment

Features and function are not available

 Resource Locks provides the policy to
enforce lock level that prevent from accident deletion