Examples of Specification Rules for Design

AR1: Cost Detail: The architecture must be specified in enough detail to at least permit correct order of magnitude impact estimation for costing.
AR2: Cost Estimates: Estimates must be made and included as to the order of magnitude of all critical costs of the architecture (particularly for those resources that are budgeted requirements).
AR3: Performance Detail: The architecture specification must include enough detail to allow order of magnitude correct estimation of the specification’s impact on ALL specified performance
goal levels (that is, all the work capacity, qualities, and savings requirements).
AR4: Performance Estimates: Estimates will be included for the impacts on ALL the critical performance requirements, at correct order of magnitude.
AR5: Background Detail for Estimate: Each impact estimate must be supported by:the factual experiential evidence for the estimate, the source of these facts, the uncertainty boundaries/error margins (±%), and a credibility rating (on a 0 to 1.0 scale). These data ideally will be presented on an impact estimation table.
AR6: Additional Data: The architectural specification must include additional specification as detailed in the current architecture specification template. This will include Stakeholders, Detailed Design Reference (if any), QC level, Review Approval level, Risks, Issues, and Dependencies.