Book Image

Modernizing Legacy Applications to Microsoft Azure

By : Steve Read, Larry Mead
Book Image

Modernizing Legacy Applications to Microsoft Azure

By: Steve Read, Larry Mead

Overview of this book

Organizations have varying circumstances, objectives, and prerequisites when contemplating a hyper-scale cloud solution transformation to a platform such as Azure. Modernizing Legacy Applications to Microsoft Azure uncovers potential scenarios and provides choices, methodologies, techniques, and prospective possibilities for transitioning from legacy applications to the Microsoft Azure environment. You’ll start by understanding the legacy systems and the main concerns regarding migration. Then, you’ll investigate why distributed architectures are compelling and the various components of the Azure platform needed during migration. After that, you’ll explore the approaches to modernizing legacy applications and the Rs of modernizing (i.e., rehost, refactor, rearchitect, and retire). You’ll also learn about integration approaches and potential pitfalls. By the end of this book, you’ll be well equipped to modernize your legacy workloads while being aware of pitfalls and best practices.
Table of Contents (18 chapters)
1
Part 1: Legacy Estate Options
3
Chapter 2: Strategies for Modernizing IBM and Unisys Mainframes
6
Part 2: Architecture Options
10
Part 3: Azure Deployment and Future Considerations

How integration fits into the bigger picture

Since most systems do not exist in a vacuum, planning for integration with your new system in Azure is extremely important. The success of integrating with other applications and data sources can make or break the modernization project when moving a legacy system to Azure. For this reason, integration needs to be a part of a modernization project from the initial design, through development and deployment and in operation after deployment.

Fortunately, Azure provides PaaS services to enable integration and the ability to host third-party integration solutions in both VMs and containers. The final two sections of this chapter will cover the things you should do and what to avoid when creating integration and playing friendly with systems in Azure.

Strategies for playing friendly

Strategies for playing friendly revolve around understanding some of the basic concepts of Azure native solutions. Let’s take a look:

  • Support...