Progressive Profiling.
The CIAM pattern of collecting user profile data incrementally over the relationship — minimal at signup, more on subsequent visits — instead of demanding everything in a single registration form.
Progressive profiling and data minimization are complementary: collect less at signup (better conversion), collect what you need contextually (better compliance posture). GDPR Article 5 (data minimization) actively favors the progressive pattern — collecting profile data only when there's a specific purpose for it produces a cleaner Article 30 record-of-processing than blanket signup forms.
Common questions
How does progressive profiling improve signup conversion?
Which fields should I collect at signup vs later?
Does GDPR favor progressive profiling?