Types of legacy system migrations
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Legacy Platform |
Typical Migration Strategy
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Typical gains seen after migration |
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AS400 applications, PeopleSoft, SAP, ERP systems |
Design a web-services layer geared towards exposing existing functionality to any SOAP enabled client.
Detailed analysis of key use cases - and re-validation of entire business process.
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Easy, single access, secure views into legacy data.
Ease of application maintenance.
Quicker turnaround on changes due to agile code-base. |
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WEB platforms migrated to ASP.NET-
Classic ASP Applications, PHP Applications, Cold Fusion Applications |
Separation of core business logic into a reusable, middle-tier. Identification of key UI elements - and creation of custom UI controls for the key UI elements.
Total core functionality migration to ASP.NET web-forms containing re-usable custom controls - with core business logic separated into a middle-tier.
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Significantly easier code maintenance.
Significant website performance improvements.
Quicker turnaround on code changes and feature enhancements. |
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DESKTOP, Win32 Apps Migrated to .NET - MFC, Visual C++ applications to C# .NET
Managed Code |
Comprehensive MFC forms migrated to WinForms (and optionally WPF) |
Managed code, significantly easier code maintenance. |