Legacy Information Systems Essay

1794 words - 7 pages

Nowadays businesses encounter numerous obstacles in their organizational architectures. Antiquated legacy information systems (LIS) and shifting business activities encompass the chief motivations for organizations to modernize (Syntel, 2008). Some of the chief concerns in NASCIO’s 2008 national survey on legacy systems were restricted or unavailable software maintenance/upgrades, incapability to improve or alter applications, limited knowledge of legacy application tools, non-existent documentation, and the capacity to enrich or modify security safeguards (NASCIO, 2008). Modernizing or replacing legacy systems has given rise to a reduction of expenditures and risks. However, these benefits are not realized without the understanding and selection of an appropriate migration strategy.
There are two objectives for this research, to analyze information security risks associated with legacy systems and to assess the various types of migration strategies or systems used to modernize legacy systems. The research topics covered include an assessment of migration strategies used to modernize legacy systems, a comparison of the legacy computer and IS architectures and distributed systems at OMH with Farm Family Insurance, a taxonomy of control systems or architectures used to replace legacy systems at OMH, and the strategies used to modernize the systems by enhancing the functionality and IS.

Positive Experiences

One of the foremost benefits of migration is that it offers the opportunity to move antiquated critical applications into modern technologies (NASCIO, 2008). Migration enriches and safeguards the long-standing investment in a business’s software infrastructure and efficiently diminishes the total cost of ownership (Syntel, 2008). Migration permits the revival of current business processes presenting opportunities that current and future technologies offer (Bass, 2013). For instance, by embracing modern service-oriented solutions such as Service Oriented Architecture (SOA), the interfaces of current applications can be renovated, therefore, extending their lives and providing enhanced functionality (Syntel, 2008).
Assess the Various Types of Migration Strategies (e.g., Pilot Projects) or Systems (e.g., Enterprise Resource Planning Systems) Used to Modernize Legacy Systems
Migrations can be introduced throughout an assortment of technology categories, including the following (a) language or code migrations; (b) operating system migrations; (c) data migrations; (d) user interface migrations, and; (e) architecture migrations, including migration to object-oriented programming (Syntel, 2008). The migration process is separated into six individual segments: application assessment, application preparation, application migration, post-migration changes, and application testing (Bass, 2013). Organizations must determine which applications meet their critical business requirements and thoroughly understand the code complexity to...

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