What is the PRIMARY reason for an organization to classify the data stored on its...

The primary reason for an organization to classify the data stored on its internal networks is to implement data protection requirements1234. Data classification helps organizations understand what data they have, its characteristics, and what security and privacy requirements it needs to meet so that the necessary protections can be achieved3. While determining data retention policy56, complying with the organization’s data policies27, and following industry best practices891011 are important aspects of data classification, they are secondary to the fundamental requirement of implementing data protection requirements.

References:

What Is Data Classification & Why Is It Important? — RiskOptics

Data Classification Policy: Definition, Examples, & Free Template - Hyperproof

Data Classification Policy: Benefits, Examples, and Techniques - Satori

What is a Data Classification Policy? - Digital Guardian

Data Classification and Practices - NIST

Data Classification as a Catalyst for Data Retention and Archiving …

What is data classification? - Cloud Adoption Framework

Data Classification - Data Security Policies | ITS Policies …

IMPLEMENTING DATA CLASSIFICATION PRACTICES - NIST

Best Practices for Data Classification | Forcepoint