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

The advent of multicloud

So, fellow technology professionals, you have no doubt probably encountered the term multicloud. Let’s take a look at how that might be leveraged for legacy modernization. To be clear, multicloud refers to the practice of employing multiple cloud service providers to host different parts, or the same part, of your infrastructure or applications. It involves distributing workloads across multiple cloud environments, such as Microsoft Azure, AWS, Google Cloud, or others, rather than relying on a single provider.

This is a growing trend in cloud computing. I have seen it used typically for customers who want to provide a failover region in another cloud provider. But there are other scenarios as well.

In the context of legacy modernization, multicloud can play a role in achieving a more flexible and resilient architecture. It allows you to leverage the strengths and capabilities of different cloud providers while reducing vendor lock-in and increasing...