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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

Using Azure PaaS features

We described IaaS, PaaS, and SaaS in Chapter 5. One of the big advantages of PaaS offerings in Azure is that much of the resiliency both in a region and between regions is already built in and all you need to do is leverage them. Let’s look at some of the benefits of using PaaS offerings in Azure:

  • Faster implementation time: Since the PaaS offering is already set up, typically, all you need to do is select the service and configure it.
  • Reduction in complexity: Normally, if you are configuring a similar IaaS implementation of a PaaS offering, it will be more complex, and you will be responsible for the underlying artifacts, such as the operating system and dependent services.
  • Improved quality of service: Most PaaS offerings in Azure are backed by an SLA, which is a financially backed agreement that the service is reliable. Getting to that level of reliability takes both expertise and specialized infrastructure.
  • Increase in agility...
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