Combining from other lab overview

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cc: @j-martens

Author: j-martens

articles/lab-services/lab-services-overview.md

@@ -2,18 +2,28 @@
 title: About Azure Lab Services | Microsoft Docs
 description: Learn how Lab Services can make it easy to create, manage, and secure labs with virtual machines that can be used by developers, testers, educators, students, and others. 
 ms.topic: overview
-ms.date: 09/16/2020
+ms.date: 12/16/2021
 ---
 
-# An introduction to Azure Lab Services
-**Azure Lab Services** lets you create labs whose infrastructure is managed by Azure. Currently, classroom lab is the only type of managed lab that's supported by Azure Lab Services. The service itself handles all the infrastructure management for a managed lab type, from spinning up VMs to handling errors and scaling the infrastructure. After an IT admin creates a lab account in Azure Lab Services, an instructor can quickly set up a lab for the class, specify the number and type of VMs that are needed for exercises in the class, and add users to the class. Once a user registers to the class, the user can access the VM to do exercises for the class.  
+# What is Azure Lab Services?
+
+Azure Lab Services enables you to quickly set up a classroom lab environment in the cloud.   An educator creates a classroom lab, provisions Windows, or Linux virtual machines, installs the necessary software and tools labs in the class, and makes them available to students. The students in the class connect to virtual machines (VMs) in the lab, and use them for their projects, assignments, classroom exercises. 
+
+Currently, classroom lab is the only type of managed lab that's supported by Azure Lab Services. The service itself handles all the infrastructure management for a managed lab type, from spinning up VMs to handling errors and scaling the infrastructure. After an IT admin creates a lab account in Azure Lab Services, an instructor can quickly set up a lab for the class, specify the number and type of VMs that are needed for exercises in the class, and add users to the class. Once a user registers to the class, the user can access the VM to do exercises for the class.  
+
+The lab infrastructure is then managed by Azure. The service itself handles all the infrastructure management for a managed lab type, from spinning up virtual machines (VMs) to handling errors, and scaling the infrastructure. You specify what kind of infrastructure you need and install any tools or software that's required for the class. 
 
 ## Key capabilities
 Azure Lab Services supports the following key capabilities/features:
 
 - **Fast and flexible setup of a lab**. Using Azure Lab Services, lab owners can quickly set up a lab for their needs. The service offers the option to take care of all Azure infrastructure work for managed lab types. The service provides built-in scaling and resiliency of infrastructure for labs that the service manages for you.
-- **Simplified experience for lab users**. Lab users can register to a lab with a registration code and can access the lab anytime to use the lab’s resources. 
-- **Cost optimization and analysis**. A lab owner can set lab schedules to automatically shut down and start up virtual machines. The lab owner can set a schedule to specify the time slots when the lab’s virtual machines are accessible to users and set usage policies per user or per lab to optimize cost. 
+
+- **Simplified experience for lab users**. Users who are invited to your lab get immediate access to the resources you give them inside your labs. They just need to sign in to see the full list of virtual machines they have access to across multiple labs. They can click on a single button to connect to the virtual machines and start working. Users don’t need Azure subscriptions to use the service.  [Lab users can register](how-to-use-classroom-lab.md) to a lab with a registration code and can access the lab anytime to use the lab’s resources. 
+
+- **Cost optimization and analysis**. [Keep your budget in check](cost-management-guide.md) by controlling exactly how many hours your lab users can use the virtual machines. Set up schedules in the lab to allow users to use the virtual machines only during designated time slots or set up reoccurring auto-shutdown and start times. Keep track of individual users’ usage and set limits.
+
+- **Automatic management of Azure infrastructure and scale**  Azure Lab Services is a managed service, which means that provisioning and management of a lab’s underlying infrastructure is handled automatically by the service. You can just focus on preparing the right lab experience for your users. Let the service handle the rest and roll out your lab’s virtual machines to your audience. Scale your lab to hundreds of virtual machines with a single click.
+
 
 If you want to just input what you need in a lab and let the service set up and manage infrastructure required for the lab, choose from one of the **managed lab types**. Currently, **classroom lab** is the only managed lab type that you can create with Azure Lab Services.
 
@@ -33,6 +43,11 @@ Here are some of the **use cases for managed lab types**:
 - Move your school’s physical computer lab into the cloud. Automatically scale the number of VMs only to the maximum usage and cost threshold that you set on the lab.  
 - Quickly provision a lab of virtual machines for hosting a hackathon. Delete the lab with a single click once you’re done. 
 
+
+## Example class types
+
+You can set up labs for several types of classes with Azure Lab Services. See the [Example class types on Azure Lab Services](class-types.md) article for a few example types of classes for which you can set up labs with Azure Lab Services. 
+
 ## Next steps
 See the following tutorials for step-by-step instructions to create a lab account, and create a classroom lab.