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Azure App Services

The most fundamental building block of Azure App Service is the App Service plan or App Service environment.

Azure App Services

There are two types of hosting environments within App Service. App Service plan and App Service environment. App Service Environment is a more sophisticated version of the App Service plan and comes with a lot more features when compared to the App Service plan. Within these, we can host several Apps like - web applications, web jobs, batches, APIs, and mobile backend services that can be consumed from our mobile Front-End.

Other related services are closely related to these apps within the App service plan. Those related services are a notification hub that we can use to push notifications into mobile devices. We can use Mobile engagement to carry out Mobile analytics.

Apart from these related services, there is one more service, which is very important when it comes to APIs, which is API management. API management can act as a wrapper around our API apps when we're exposing those APIs to the outside world. It comes with a lot of features such as throttling, security, and it will be beneficial if we want to commoditize our APIs and sell it to the outside world.

To enable communication between apps in the App Service plan and apps installed on virtual machines within the virtual network. There are two ways we can do it. One way is to establish Point-to-site VPN between apps in the App Service plan and virtual network via which the apps can communicate with each other. And the second way is if we have the App service environment. Because it will get deployed into a virtual machine by itself, the Apps within that App Service environment can seamlessly communicate with the apps installed on virtual machines within the virtual network.

And finally, there are two important things. The first one is security, and the second one is monitoring to secure and control the App services environment.

App Service plan

An app service plan denotes a set of features and capacity that we can share across multiple apps in the same subscription and geographical region. A single or dual app can be configured to run on the same computing resources.

Azure App Services

Each App Service plan defines:

  • Region (West US, East US, etc.)
  • Number of VM instances
  • Size of VM instances (Small, Medium, Large)
  • Pricing tier
    • Shared compute: Free and shared, the two basic tiers, runs an app over the same Azure VM as other App Service app runs, including apps of different customers.
    • Dedicated compute: Basic, Standard, Premium, and PremiumV2 tiers run apps on a fixed Azure VM.
    • Isolated: This tier runs dedicated Azure VMs on dedicated Azure Virtual Networks, which provides network isolation on top of computing isolation to your apps.
    • Consumption: It is only available to function apps. It scales the functions dynamically, depending on the workload.

Environment features

  • Development frameworks: App Service supports a variety of development frameworks, including ASP.NET, classic ASP, node.js, PHP, and Python- all of which run as extensions within IIS.
  • File access
    • Local drives - Operating system drive (D:\drive), an application drive and user drive (the C:\ drive)
    • Network drives - Each customer's subscription has a reserved directory structure on a specific UNC share within a data center.
  • Network access: The application code can use TCP/IP and UDP based protocols to make outbound network connections to access Internet endpoints that expose external services.

Web apps Overview

Azure App Service Web Apps is a service for hosting web applications. The key feature of App Service Web Apps.

  • Multiple language and frameworks
  • DevOps optimizations
  • Security & Compliance
  • Application template
  • Visual Studio integration

Creating App Service Plan in Azure Portal

Step 1: Click on create a new resource and search for App Service Plan to create it.

Azure App Services

Step 2: Fill-in all the required details and select the SKU size, as shown in the figure below. Then click on create.

Azure App Services

Step 3: Your app service plan will be created. You can now explore and modify it as per your requirement.

Azure App Services
Next TopicAzure Web App




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