This blog shows deploying Azure Functions using Azure Devops.You can find here, how to create the Azure Functions.

Continous Integration and Delivery using Azure Devops:

Note: Please make sure to create the Azure Function app service in Azure by selecting proper storage account.

Azure functions created in above link is pushed to Azure Devops git repository.

In Azure Devops, create a new pipeline and select the Azure Functions task.

Create a release pipeline with above pipeline artifacts by searching for Azure Functions for .Net task.

This is how you can deploy Azure functions to Azure.