What are azure functions What is their use

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Recently I came across the something called Azure functions. What is their usage? Can I use it for all scenarios of serverless computing?

Can somebody explain briefly?
Jan 10, 2020 in Azure by anonymous
• 19,610 points
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1 answer to this question.

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Azure Functions is a serverless computing service hosted on the Microsoft Azure public cloud. These are designed to accelerate and simplify application development.

Azure Functions which is basically a "Functions-as-a-service" is a solution for easily running small pieces of code, or "functions," in the cloud. You can write just the code you need for the problem, without having to worry about a whole application or the infrastructure to run it. These Azure Functions can make development even more productive, and you can use your development language of choice, such as C#, Java, JavaScript, PowerShell, and Python. You need to pay only for the time your code runs and trust Azure to scale as needed. 

They provide templates that could be used in the following scenarios:

  • HTTPTrigger - Trigger the execution of your code by using an HTTP request. 

  • TimerTrigger - Execute cleanup or other batch tasks on a predefined schedule.

  • CosmosDBTrigger -  Process Azure Cosmos DB documents when they are added or updated in collections in a NoSQL database.

  • QueueTrigger -  Respond to messages as they arrive in an Azure Storage queue.

  • EventGridTrigger - Respond to events delivered to a subscription in Azure Event Grid.

  • EventHubTrigger -  Respond to events delivered to an Azure Event Hub.

  • ServiceBusQueueTrigger - Connect your code to other Azure services or on-premises services by listening to message queues.

  • ServiceBusTopicTrigger - Connect your code to other Azure services or on-premises services by subscribing to topics. 

Azure Functions supports triggers, which are ways to start execution of your code, and bindings, which are ways to simplify coding for input and output data. 

Hope this helps!

Go for the Azure architect certification here.

Thanks!

answered Jan 10, 2020 by Sirajul
• 59,230 points

edited Jun 27, 2023 by Khan Sarfaraz

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