Azure App Service gives users several capabilities

1. Provision and deploy Web and Mobile Apps in seconds

2. Build engaging iOS, Android, and Windows apps

3. Automate business processes with a visual design experience

4. Integrate with "Software as a Service" (SaaS) applications (Office 365, Salesforce, Dynamics, OneDrive, Box, Dropbox, Twilio, Twitter, Facebook, Marketo, and so on) and on-premises applications

Web Apps

As provided by Azure App Service, Web Apps is a fully managed platform that enables you to build, deploy, and scale enterprise-grade Web Apps in seconds. These are the main features:

1. .NET, Java, PHP, Node.js, Python
2. Built-in autoscale and load balancing
3. High availability with auto-patching
4. Continuous deployment with Git, TFS, GitHub
5. Deployment slots, testing in production, WebJobs and continuous integration
6. Web Apps Gallery: WordPress, Umbraco, Joomla, Drupal

These are nothing more than the previous Azure Websites services, which is why the Azure Websites deployed to Azure are now called "Web Apps," and it's possible to run these apps as before. It also can host WebJobs as before, with automatic backup frequency dependent on the tier selected by the client.

Mobile Apps

Provided by Azure App Service, Mobile Apps are a rich set of back-end capabilities for native Windows, iOS, and Android mobile platforms, as well as multi-platform environments such as Xamarin and Cordova. The following list shows the main features and improvements:

1. Built-in autoscale support (automatically scale up/down based on real-world load)
2. Broadcast push with customer segmentation
3. Make your app work offline and sync
4. Social integration with Facebook, Twitter, Google
5. Traffic manager support (geographically scales apps around the world)
6. Continuous integration/deployment support with Visual Studio Online, GitHub, and Bitbucket
7. Virtual networking support and hybrid connections to on-premises databases
8. Staged deployment and test in production support
9. WebJobs support for long-running background tasks

This feature offers a highly scalable, globally available mobile application-development platform for enterprise developers and systems integrators.

Logic Apps

Logic Apps provided by Azure App Service offer the ability to any user (technical or not) to automate process execution across popular consumer and commercial services, as well as custom APIs on-premises. This service includes the advanced set of Azure BizTalk service capabilities for even the most advanced enterprise integration scenarios. Following are the main features:

1. Visually create business processes and workflows
2. Deliver integration capabilities in Web, Mobile, and API Apps
3. Integrate with your SaaS and enterprise applications
4. Automate EAI or B2B and business process
5. Connect to on-premises data

Currently many connectors can be used in Logic Apps, separated into two main categories: Standard Connectors and Premium Connectors.

API Apps

API Apps provided by Azure App Service offer a rich platform and ecosystem for building, consuming, and distributing APIs in the cloud and on-premises. The main features provided are as follows:

1. Integrate with SaaS and enterprise applications
2. Generate client proxies or APIs in your language of choice
3. Automate versioning and deployment of API Apps
4. Secure APIs with Active Directory, Single Sign-On, and OAuth
5. Share APIs internally with organizational gallery

The API Apps enhance the experience of developing, deploying, publishing, consuming, managing, and monetizing RESTful Web APIs. Current APIs can take advantage of the API Apps platform with no changes; it can connect to Azure Active Directory, it allows easy connection to SaaS platforms, and it can be consumed by Logic Apps.

Benefits of Azure App Services

1. High seccure web app development

2. Multilingual and versatile framework

3. Globa Scale with high availability

4. Improved developer productivity with Application Templates

5. Visual Studio Integration

6. Quick analytics and actionable insights

7. Secure integration with other SaaS apps

Limitations of Azure App Service

• Remote Desktop is not available

The App Services is part of PaaS (Platform as a Service) model and we have very limited access to infrastructure. So, we cannot troubleshoot application problems by viewing log files or reviewing IIS settings and event logs.

• Third party software management tools are not supported

We cannot manage the server, so we cannot install any monitoring/management tool for third-party software.

• Performance counter is not visible

As we do not have access to the app server, we cannot see performance indexes such as IIS queues.

References

1. Introduction to Azure App Service. (December 2021). Retrieved from https://www.informit.com/articles/article.aspx?p=2423911.

2. An Introduction to Azure App Service. (December 2021). Retrieved from https://www.c-sharpcorner.com/article/an-introduction-to-azure-app-services/.

3. 7 Benefits of Azure Web Apps in developing Enterprise Apps rapidly. (December 2021). Retrieved from https://www.saviantconsulting.com/blog/7-benefits-azure-web-apps-development.aspx.