Microsoft Purview's data discovery and classification capabilities are sufficient for identifying sensitive data but do not address compliance or scalability needs directly.

Microsoft Purview's data loss prevention (DLP) policies can prevent data leaks but alone do not fully meet the compliance and scalability requirements.

Microsoft Purview's tools for data governance and compliance, including data retention and auditing, are essential but do not by themselves ensure scalability or cost efficiency.

Microsoft Purview provides a comprehensive suite of features including data discovery and classification, DLP policies, and data governance tools, which together address compliance, scalability, and cost efficiency.