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)
Part 1: Legacy Estate Options
Chapter 2: Strategies for Modernizing IBM and Unisys Mainframes
Part 2: Architecture Options
Part 3: Azure Deployment and Future Considerations


As we’ve discussed in this chapter, integration plays a key role in the success of most systems that move from their legacy environment to Azure. To play friendly with integration in Azure, we need to know and follow these rules. Using the information provided, you can now implement flexible and scalable interfaces to your Azure systems that run well in a heterogeneous estate. At this point, you understand where the systems exist in the organization’s estate, such as on-premises, other clouds, or within Azure. You also know how to use Azure-friendly integration tools. You should use Azure PaaS services where possible; otherwise, use tools that leverage cloud-native implementation techniques such as auto-scaling and clustering. Finally, you know that you should avoid non-cloud-friendly integration tools when possible.

Now, let’s move on to the final chapter, where we will discuss the trends in legacy modernization to Azure, as well as provide some thoughts...