Data Minimization

Data minimization requires an organization to limit the personal data it collects, processes, and stores to what is strictly necessary for a defined purpose. The GDPR establishes it as a core principle: personal data must be adequate, relevant, and limited to what is necessary in relation to the purposes for which it is processed.

In practice, this means not asking for information that has no clear use, not retaining data longer than needed, and not repurposing data collected for one reason to serve another without a lawful basis. Registration forms that request only the fields required to create an account, rather than capturing extensive profile data upfront, are a direct application.

Data minimization intersects with progressive profiling, which collects additional data over time as the relationship deepens and the need for it becomes clear, rather than front-loading the request at signup.

For CIAM, data minimization shapes registration, profile management, and retention policies, directly affecting both regulatory compliance and the customer’s trust in the platform.

Sources

• Regulation (EU) 2016/679 (GDPR): https://eur-lex.europa.eu/eli/reg/2016/679/oj