Death, taxes, & scalability

Letcia Duboc, Emmanuel Letier, David S. Rosenblum

Research output: Indexed journal article Articlepeer-review

5 Citations (Scopus)


The London Ambulance System and the online tax return system of Her Majesty's Revenue and Customs are two systems that have experienced significant problems of scalability. However, we've never seen a precise discussion of their scalability concerns. In this column we use those systems to illustrate how the scalability of software systems can be more precisely understood and characterized, and we describe recent research on goal-obstacle analysis that can help elaborate the scalability requirements of such systems, in an effort to mitigate scalability problems early in development.

Original languageEnglish
Article number5484110
Pages (from-to)20-21
Number of pages2
JournalIEEE Software
Issue number4
Publication statusPublished - Jul 2010
Externally publishedYes


  • KAOS
  • Obstacles
  • Requirements
  • Scalability
  • Software engineering


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