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Modernizing Legacy Applications to Microsoft Azure

Modernizing Legacy Applications to Microsoft Azure

By : Steve Read, Larry Mead
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Modernizing Legacy Applications to Microsoft Azure

Modernizing Legacy Applications to Microsoft Azure

5 (3)
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)
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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

Modernizing the Monolith - Best Practices

In Chapter 7, we explored monolithic architectures and contrasted them with microservices-based architectures. We discovered that they are very different in their approach to interprocess communication, especially when it comes to database access. As a reminder, in monolithic architectures, it is quite common to have one or a few databases with many different applications or services from different business units accessing them. In microservices-based architectures, we want to have every service leverage its own database. So, in theory, in a microservices architecture, there is a database for every service we implement.

In this chapter, we will introduce some approaches for modernizing these legacy monolithic applications. We will also look at the best practices to keep in mind on your legacy modernization journey.

We will cover the following topics in this chapter:

  • Understanding how we got here – the evolution of application...
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Modernizing Legacy Applications to Microsoft Azure
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