| Description |
1 online resource (200 p.) |
| Contents |
Cover -- Title Page -- Copyright and Credits -- Dedications -- Foreword -- Contributors -- Table of Contents -- Part 1: Legacy Estate Options -- Chapter 1: Understanding Your Legacy Environment -- the Modernization Journey -- Current legacy hardware and operating system -- IBM and Unisys mainframes -- IBM Midrange -- Enterprise Unix -- Other legacy estates -- The current state of legacy applications -- Scope of the legacy application estate -- Languages used in the current estate -- Third-party (COTS) applications -- Utilities (tools) used by applications -- Operating system services |
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Application-specific SLAs -- What are the goals of moving to a hyperscale cloud such as Microsoft Azure? -- Cost-related -- Application development-related -- Hardware-related -- The need to choose a target architecture -- Azure Landing Zones -- Consider your constraints -- Time constraints -- Resource constraints -- Funding constraints -- How do you declare success for a legacy modernization to Azure? -- Identify the first workload to modernize to Azure -- Determine if modernization can be a multi-step process -- Establish hybrid and integration requirements -- Establish repeatable processes |
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Chapter 2: Strategies for Modernizing IBM and Unisys Mainframes -- IBM mainframes -- z/OS - The most common IBM mainframe operating system -- z/VSE - Similar to z/OS, but usually for smaller workloads -- z/VM - Z-series virtualization -- z/TPF - For high-volume transaction workloads -- z/Linux - Linux that can run under z/VM -- Specialty engines - IFL and zIIP -- Unisys -- Libra - From the Burroughs MCP line -- Dorado - From the Sperry OS/2200 operating system -- Summary -- Chapter 3: Midrange to Azure -- What is a midrange system? -- POWER systems -- IBM iSeries -- OS/400 overview |
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Applications -- Data -- Control Language -- ISV versus homegrown solutions -- Administration -- IBM AIX -- AIX overview -- AIX versus Linux -- what's the difference? -- Applications -- Azure Spring Cloud -- Data -- COTS applications -- Administration -- Summary -- Chapter 4: Modernizing Legacy UNIX Systems -- The current UNIX landscape -- BSD System 4.3 versus System V -- Old UNIX versus modern UNIX -- UNIX scripts -- Applications -- Migrating Solaris -- SPARC versus x86 -- Emulation options -- Converting to Linux -- Converting to PaaS services -- Hosting in Azure -- Migrating HP-UX |
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PA-RISC versus Itanium -- Emulation options -- Converting to Linux -- Converting to Azure PaaS -- Hosting in Azure -- Other UNIX variants -- Summary -- Part 2: Architecture Options -- Chapter 5: An Overview of the Microsoft Azure Cloud Platform -- A brief history of Azure -- Azure Regions -- Azure Stack -- Azure compute -- Azure storage -- Azure networking -- Understanding internal Azure networking services -- Looking at Azure networking services for connection to on-premises data centers -- Azure databases -- Azure security and identity -- Understanding the Azure approach to hybrid |
| Summary |
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 |
| Notes |
Description based upon print version of record |
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Deploying and maintaining systems on Azure |
| Subject |
Microsoft Azure (Computing platform)
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Cloud computing.
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Cloud computing.
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Microsoft Azure (Computing platform)
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| Form |
Electronic book
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| Author |
Mead, Larry, author
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Ellsworth, Bob, writer of foreword
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| ISBN |
9781803238463 |
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1803238461 |
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