Legacy System Modernization Strategies

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2001
Accession Number
ADA396051

Entities

People

  • Dan Plakosh
  • Grace Lewis
  • Pat Place
  • Robert C. Seacord
  • Santiago Comella-dorda

Organizations

  • Carnegie Mellon University

Tags

DTIC Thesaurus Topics

  • Application Software
  • Commerce
  • Computer Programming
  • Computer Programs
  • Computers
  • Databases
  • Department Of Defense
  • Engineering
  • Graphical User Interface
  • Homosexuality
  • Information Systems
  • Language
  • Maintenance
  • Operating Systems
  • Relational Database Management Systems
  • Relational Databases
  • Software Development

Fields of Study

  • Computer science

Readers

  • Defense Acquisition Program Management
  • Software Engineering.