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Software Architecture Evaluation Methods

 Software architecture evaluation methods help assess the quality, maintainability, and effectiveness of a system’s architecture. These methods can be categorized into early evaluation methods (before implementation) and late evaluation methods (after implementation).

Early Evaluation Methods

These methods evaluate software architecture at the early stages of development, ensuring that quality requirements are met before implementation. By aligning the architecture with quality objectives, potential risks can be mitigated early.

Early evaluation methods can be categorized into scenario-based and mathematical model-based approaches.

  1. SAAM (Scenario-Based Software Architecture Analysis Method) – Evaluates an architecture’s ability to support functional and quality attributes through predefined scenarios.
  2. ATAM (Architecture Tradeoff Analysis Method) – Analyzes trade-offs between different quality attributes to make informed architectural decisions.
  3. ALPSM (Architecture Level Prediction of Software Maintenance) – Assesses maintainability by predicting the effort required for future modifications.
  4. ALMA (Architecture Level Modifiability Analysis) – Focuses on modifiability, evaluating how well an architecture can adapt to changes.
  5. CBAM (Cost-Benefit Analysis Method) – Estimates the cost-effectiveness of architectural decisions by balancing costs and benefits.
  6. FAAM (Family Architecture Assessment Method) – Evaluates software product line architectures for reusability and maintainability.
  7. SALUTA (Scenario-Based Architecture-Level Usability Analysis) – Assesses usability aspects of software architecture.
  8. SBAR (Scenario-Based Architecture Reengineering) – Helps in reengineering architectures by analyzing real-world usage scenarios.
  9. SAAMCS (SAAM for Complex Scenarios) – An extension of SAAM tailored for evaluating complex systems.
  10. ESAAMI (Extending SAAM by Integration in the Domain) – Enhances SAAM by incorporating domain-specific considerations.
  11. ASAAM (Aspectual Software Architecture Analysis Method) – Evaluates aspect-oriented architectures, considering cross-cutting concerns.
  12. SACAM (Software Architecture Comparison Analysis Method) – Compares multiple architectures to determine the best-fit design.
  13. DoSAM (Domain-Specific Software Architecture Comparison Model) – Analyzes architectures within specific domains to identify optimal structures.

Late Evaluation Methods

Late evaluation methods analyze discrepancies between planned architecture and implemented architecture to identify deviations, inefficiencies, and areas for improvement. These methods often utilize tool-based approaches for automated analysis.

  1. Tvedt et al.'s Approach – Examines architectural conformance and detects deviations.
  2. Lindvall et al.'s Approach – Evaluates software evolution and its impact on architectural integrity.
  3. Fiutem and Antoniol’s Approach (Tool-Based) – Uses automated tools to assess the implemented architecture.
  4. Murphy et al.'s Approach (Tool-Based) – Focuses on reverse engineering to recover architectural views from code.
  5. Sefika et al.'s Approach (Tool-Based) – Analyzes runtime interactions to validate architectural compliance.
These methods provide a structured approach to ensuring that software architectures align with their intended design and quality requirements. Selecting the right evaluation method depends on the project’s phase, goals, and complexity.

Interesting resources

1. https://resources.sei.cmu.edu/asset_files/TechnicalReport/1998_005_001_16646.pdf (this one os old)

2. https://resources.sei.cmu.edu/asset_files/TechnicalReport/2000_005_001_13706.pdf (this one is new)

3. http://lore.ua.ac.be/Teaching/CapitaMaster/ATAMmethod.pdf

4. https://www.win.tue.nl/oas/architecting/aimes/papers/Scenario-Based%20SWA%20Evaluation%20Methods.pdf

5. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.258.6953&rep=rep1&type=pdf

6. https://www.infoq.com/articles/ieee-pattern-based-architecture-reviews

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