Modernization of legacy enterprise systems introduces many challenges due to the size, complexity, and frailty of the legacy systems. Size and complexity issues often dictate that these systems are incrementally modernized, and new functionality is incrementally deployed before the modernization effort is concluded. This in turn requires that legacy components operate side by side with modernized components in an operation system—introducing additional problems.
In this report we discuss some alternative development approaches for incrementally modernizing legacy systems, including consideration of the advantages and disadvantages of each approach. These development alternatives can be mapped against the peculiarities of a particular modernization effort to recommend an appropriate approach.
This report is related to the following area(s) of work:
System of SystemsTechnical Report
CMU/SEI-2001-TR-025
July 2001
SEI:
Seacord, Robert; Comella-Dorda, Santiago; Lewis, Grace; Place, Patrick; & Plakosh, Daniel. Legacy System Modernization Strategies (CMU/SEI-2001-TR-025). Software Engineering Institute, Carnegie Mellon University, 2001. http://www.sei.cmu.edu/library/abstracts/reports/01tr025.cfm
IEEE:
R. Seacord, S. Comella-Dorda, G. Lewis, P. Place, and D. Plakosh, "Legacy System Modernization Strategies," Software Engineering Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, Technical Report CMU/SEI-2001-TR-025, 2001. http://www.sei.cmu.edu/library/abstracts/reports/01tr025.cfm
APA:
Seacord, R., Comella-Dorda, S., Lewis, G., Place, P., & Plakosh, D. (2001). Legacy System Modernization Strategies (CMU/SEI-2001-TR-025). Retrieved June 19, 2013, from the Software Engineering Institute, Carnegie Mellon University website: http://www.sei.cmu.edu/library/abstracts/reports/01tr025.cfm
CHI:
Seacord, Robert, Santiago Comella-Dorda, Grace Lewis, Patrick Place, and Daniel Plakosh. Legacy System Modernization Strategies (CMU/SEI-2001-TR-025). Pittsburgh, PA: Software Engineering Institute, Carnegie Mellon University, 2001. http://www.sei.cmu.edu/library/abstracts/reports/01tr025.cfm
MLA:
Seacord, R., Comella-Dorda, S., Lewis, G., Place, P., & Plakosh, D. 2001. Legacy System Modernization Strategies (Technical Report CMU/SEI-2001-TR-025). Pittsburgh: Software Engineering Institute, Carnegie Mellon University. http://www.sei.cmu.edu/library/abstracts/reports/01tr025.cfm
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