Modernizing Legacy Systems: Software Technologies, Engineering Processes, and Business Practices

Businesses inevitably face a critical choice in the design and maintenance of their software systems: Dismantle older systems and completely replace them, or incrementally incorporate new technologies into existing systems. Many businesses choose the latter course, seeking to maximize their existing investment while adapting to rapidly evolving technology. Modernizing Legacy Systems is a much-needed guide, showing how to implement a successful modernization strategy and describing specifically a risk-managed, incremental approach--one that encompasses changes in software technologies, engineering processes, and business practices.

Key topics include:

*Making a case for modernization

*Understanding requirements and constraints

*Maintaining performance, data integrity, and security

*Designing and deploying the target architecture

*Migrating code and data

*Estimating costs

For every topic, the book presents current standards and available products that support legacy system modern

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