When performing gap analysis, which of the following is not a valid response to an Architecture Building Block missing in the Target Architecture?

The process of gap analysis in architecture involves identifying the differences or "gaps" between the current state (Baseline Architecture) and the desired future state (Target Architecture). This helps in determining what architecture building blocks (ABBs) need to be introduced, modified, or eliminated.

When a building block is determined to be missing from the Target Architecture, the rationale behind the responses comes into play. The valid responses entail reviewing reasons for its absence, documenting decisions, and reinstating or eliminating components based on thorough analysis.

The option indicating that if a building block was correctly eliminated, it should just be added back to the Target Architecture contradicts the fundamental principle of gap analysis. If a building block is deemed unnecessary and thus eliminated, simply adding it back without reviewing the decision undermines the purpose of the analysis. The intention is to ensure that each building block aligns with the strategic goals and architectural vision; any inclusion should be justified, not automatic.

Conversely, the other responses all adhere to the principles of evaluating and documenting architectural decisions, confirming that gaps are addressed systematically and that any eliminations are done based on sound reasoning, which is a key aspect of performing a comprehensive gap analysis.