[2] As the subject-matter experts (SMEs) who worked at the inception and during all evolutions of the application are no-longer available or have a partial knowledge, and the lack of proper and up-to-date documentation, modernization initiatives start with assessing and discovering the application using Software intelligence.
“Real world” decision making in business organizations often has to be made based on “bounded rationality”.
The software modernization tasks are supported by various tools related to Model-driven architecture from the Object Management Group and processes such as ISO/IEC 14764:2006 or Service-Oriented Migration and Reuse Technique (SMART).
[13] Software modernization implies various manual and automated tasks performed by specialized knowledge workers.
Over the years, several different options have come into being for legacy modernization – each of them met with varying success and adoption.
A legacy code is any application based on older technologies and hardware, such as mainframes, that continues to provide core services to an organization.
Legacy applications are frequently large and difficult to modify, and scrapping or replacing them often means re-engineering an organization’s business processes as well.
Re-implementing applications on new platforms in this way can reduce operational costs, and the additional capabilities of new technologies can provide access to functions such as web services and integrated development environments.
The recent development of new technologies such as program transformation by software modernization enterprises have made the legacy transformation process a cost-effective and accurate way to preserve legacy investments and thereby avoid the costs and business impact of migration to entirely new software.
For example, moving from Windows NT Server to Windows 2000 Server would usually be considered a migration because it involves making sure that new features are exploited, old settings do not require changing, and taking steps to ensure that current applications continue to work in the new environment.
Due to the evolution of technology today some companies or groups of people don’t know the importance of legacy systems.