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CpSc 875

CpSc 875. John D. McGregor C 12 – Architecture Evaluation. Architecture adds value. Value is a synonym for desirableness If the value of something increases it is because it has become more desirable for some reason

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CpSc 875

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  1. CpSc 875 John D. McGregor C 12 – Architecture Evaluation

  2. Architecture adds value • Value is a synonym for desirableness • If the value of something increases it is because it has become more desirable for some reason • A “value chain” represents a sequence of stages, each of which makes the “thing”, for which this is the value chain, more desirable. • The value chain for a software product is the series of activities that craft a solution.

  3. Porter’s Value Chain

  4. Adding value • How does architecture add value? (How does it make the product more desirable?) • Increased probability that customers like the product • Increased probability of highly reliable operation • Increased probability that the product will have the qualities desired • Increased predictability of implementation

  5. Adding value - 2 • Even architecture evaluation adds value • It removes defects making the architecture more desirable as a basis for building a product • Question: How do we measure these increases in value?

  6. Where are we?

  7. Architecture of the day • GIMP – multiple windows that share state • Could use MVC but need a more efficient communication and a more structured communication

  8. PAC • Escalates up hierarchy and then back down

  9. http://www.vico.org/pages/PatronsDisseny/Pattern%20Presentation%20Abstra/http://www.vico.org/pages/PatronsDisseny/Pattern%20Presentation%20Abstra/ • http://www.dossier-andreas.net/software_architecture/pac.html • http://www.innovatingtomorrow.net/2008/04/04/pac-software-architecture

  10. Architecture TradeOff Analysis Method (ATAM) • The purpose of the ATAM is to assess the consequences of architectural decisions in light of quality attribute requirements. • http://www.sei.cmu.edu/reports/00tr004.pdf

  11. Use web slides about ATAM

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