Book Image

A Developer's Guide to Cloud Apps Using Microsoft Azure

By : Hamida Rebai Trabelsi
Book Image

A Developer's Guide to Cloud Apps Using Microsoft Azure

By: Hamida Rebai Trabelsi

Overview of this book

Companies face several challenges during cloud adoption, with developers and architects needing to migrate legacy applications and build cloud-oriented applications using Azure-based technologies in different environments. A Developer’s Guide to Cloud Apps Using Microsoft Azure helps you learn how to migrate old apps to Azure using the Cloud Adoption Framework and presents use cases, as well as build market-ready secure and reliable applications. The book begins by introducing you to the benefits of moving legacy apps to the cloud and modernizing existing ones using a set of new technologies and approaches. You’ll then learn how to use technologies and patterns to build cloud-oriented applications. This app development book takes you on a journey through three major services in Azure, namely Azure Container Registry, Azure Container Instances, and Azure Kubernetes Service, which will help you build and deploy an application based on microservices. Finally, you’ll be able to implement continuous integration and deployment in Azure to fully automate the software delivery process, including the build and release processes. By the end of this book, you’ll be able to perform application migration assessment and planning, select the right Azure services, and create and implement a new cloud-oriented application using Azure containers and orchestrators.
Table of Contents (20 chapters)
1
Part 1 – Migrating Applications to Azure
6
Part 2 – Building Cloud-Oriented Applications Using Patterns and Technologies in Azure
10
Part 3 – PaaS versus CaaS to Deploy Containers in Azure
14
Part 4 – Ensuring Continuous Integration and Continuous Deployment on Azure
17
Assessments

Creating and configuring web app settings in Azure App Service

In App Service, app settings are variables that we pass to the application code as environment variables. In a Linux environment or in custom containers, App Service uses the --env flag to pass app settings to the container and set the environment variables.

In both cases, they will be injected into your application environment when the application is launched. In the case of additions, deletions, or modification of application settings, App Service will trigger an application restart.

Application settings can be configured and accessed by navigating to App Service. Under Configuration, we select Application settings, as presented in the following figure:

Figure 7.13 – Configuration settings in App Service

Figure 7.13 – Configuration settings in App Service

When we create an ASP.NET Core application, we have the application settings in Web.config included in <appSettings> or appsettings.json. They are the same as the application...