App Service, Functions, and Logic Apps on Azure Arc

Azure functions

Azure Function is a serverless solution that allows you to write less code, save on costs, and maintain less infrastructure. Instead of worrying about deploying and maintaining servers, the cloud infrastructure provides all the up-to-date resources needed to keep your applications running. You only need to focus on the pieces of code that matter most to you, and Azure Functions handles the rest.

Azure Functions provides "compute on-demand" in two significant ways:

1. Azure Functions permits you to implement your system's logic into readily available blocks of code. These code blocks are called "functions". Different functions can run anytime you need to respond to critical events.
2. As requests increase, Azure Functions meets the demand with as many resources and function instances as necessary - but only while needed. As requests fall, any extra resources and application instances drop off automatically.

Scenarios

As you build your functions, you have the following options and resources available:

1. Use your preferred language: We can write functions in Java, JavaScript, PowerShell, or python or use a custom handler to use virtually any other language.
2. Automate deployment: From a tools-based approach to using external pipelines, there are various deployment options available.
3. Troubleshoot a function: We can use monitoring tools and testing strategies to gain insights into our apps.
4. Flexible pricing options: You only pay while your functions are running, while the Premium and App Service plans offer features for specialized needs.

Azure Logic Apps

Logic Apps are a cloud-based platform for creating and running automated workflows that integrate your apps, data, services, and systems. You can easily run a business workflow in Azure using the Logic App service. The Logic App is a logical container for one workflow you can define using triggers and actions. A trigger can instantiate a workflow consisting of one or many activities (actions).

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These components are:

• Logic Apps RP – It reads the workflow definition and breaks down into a composition of tasks with dependencies.
• Logic Apps Runtime – It distributed compute/workers are coordinated to complete tasks on-demand.
• Connection Manager – It manages connection configuration, credentials, and token refreshment.
• Connector Runtime – API abstraction via Open API descriptions.

Frequently Asked Questions

How much does Azure Arc cost to public?

App Service on Azure Arc is free of cost during the public preview.

Are both Windows and Linux apps supported?

Only Linux-based apps are supported, both custom and code containers while Windows applications are not supported.

Name the built-in application stacks that are supported?

All built-in Linux stacks are supported.

Are all app deployment types supported?

 Currently az webapp up, FTP deployment is also not supported. Other deployment methods that are supported, includes Visual Studio, Git, ZIP, CI/CD and VSCode.

Are all the networking features supported?

Networking features such as Virtual Network integration or hybrid connections are not supported. Access restriction support was included in April 2022. Networking is to be handled directly in the networking rules in the Kubernetes cluster itself.

Conclusion

I hope this article provided you with insights about Microsoft Azure, App Service, Functions, and Logic Apps on Azure Arc.

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