Which of the following best describes the purpose of the Gap Analysis technique?

Determining service levels is part of requirements definition and architecture design, not the primary purpose of gap analysis.

Establishing quality metrics is a part of architecture governance and design, distinct from identifying differences between architectures.

Identifying commercial building blocks for purchase is an activity within solution specification or procurement, following the identification of needs through gap analysis.

Gap analysis is a crucial TOGAF technique for identifying differences between a Baseline Architecture and a Target Architecture. This comparison helps in uncovering missing functionalities, redundant components, or elements that need modification, thereby highlighting what needs to be done to achieve the desired future state.

Validating non-functional requirements is part of architectural design and review, ensuring the architecture meets performance, security, and other quality attributes.