GDPR-compliant log design requires purpose-limited data retention for healthtech rollbacks

An article advises health technology companies to design application logs as limited operational datasets rather than comprehensive records to comply with GDPR. It recommends logging only pseudonymous references and specific metrics like latency and error rates while excluding patient messages and medical data. This approach allows teams to safely roll back features from specific user cohorts without retaining sensitive personal information. The article emphasizes that fields not directly influencing rollback decisions should be excluded from logs, with identity mapping handled through separate controlled services.