A solutions architect must inventory and assess applications and databases in a newly acquired company’s undocumented on-premises data center before migrating to AWS. Traffic patterns are variable and some apps run monthly batch processes. The architect needs to discover the portfolio and dependencies to build a migration business case. Which solution provides the required discovery and reporting?

The correct solution leverages Migration Evaluator for automated inventory and business-case reporting, which is crucial for undocumented environments and building a migration justification. AWS Migration Hub serves as a central dashboard to view the discovered portfolio. AWS Application Discovery Service, specifically its agent-based or agentless discovery, is essential for mapping application dependencies, including databases, which is vital for planning migrations and understanding variable traffic patterns. Incorrect options: AWS SMS and AWS DMS are migration tools, not primary discovery and assessment tools for an entire portfolio. AWS Service Catalog manages approved IT services, not discovers existing on-premises applications. AWS Application Migration Service is for migrating servers, not for comprehensive discovery and dependency mapping. AWS Storage Gateway connects on-premises storage to AWS, it doesn't assess application or database dependencies. AWS Control Tower sets up and governs multi-account AWS environments; it does not discover on-premises applications or generate a portfolio. AWS SMS is for server migration, not detailed dependency mapping or business case generation.