What term does TOGAF use when an implementation has no features in common with the architecture specification?

The term used in TOGAF to describe an implementation that has no features in common with the architecture specification is "Non-conformant." This designation indicates that the implementation does not meet the agreed-upon architectural standards and guidelines set forth in the architecture specifications.

In the context of TOGAF, a non-conformant implementation fails to align with the defined architecture, which is crucial for ensuring that enterprise systems work harmoniously and effectively together. Non-conformance could result in additional technical debt, integration challenges, and potential inefficiencies within the enterprise architecture. Recognizing non-conformant implementations allows organizations to take corrective actions or re-evaluate their architectural needs to ensure alignment with strategic objectives.

The other terms, such as compliant and conformant, indicate varying degrees of alignment with architectural specifications, while irrelevant is not commonly used in this context and does not specifically capture the essence of a lack of compliance.