The correct option is Gap analysis.

A Gap analysis compares the current environment to the required computing requirements and identifies where cloud services do not meet those requirements. This evaluation highlights functional shortfalls performance or compliance gaps and guides decisions about remediation changes or alternative solutions during a cloud migration feasibility study.

Vulnerability assessment is focused on finding security weaknesses and exploitable flaws in systems and software. It does not systematically compare current capabilities to required computing specifications so it is not the correct evaluation for this question.

Capacity planning deals with forecasting resource needs and ensuring adequate compute storage and network capacity for future demand. It is concerned with sizing and scaling rather than identifying mismatches between required features and available services so it does not match the described evaluation.

Risk assessment evaluates threats likelihood and potential impacts to systems and it informs mitigation strategies. While risk assessments are important for migration planning they do not specifically map current capabilities against stated requirements and therefore are not the correct choice here.

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