Three formats depending on profession: (1) GitHub for developers — public repos with README, commented code and completed projects. According to LinkedIn, 80% of tech recruiters check GitHub profiles. (2) Behance or personal website for designers — focused on 5-8 case studies showing process, not just the end result. (3) Case study portfolio (Notion, PDF, website) for marketing, consulting, PM — concrete results with figures. Quality rules: Show process and thinking, not just outputs. Focus on 3-5 strong projects rather than 20 weak ones. GDPR: Only show client data and logos with permission. Cedefop: Portfolios are particularly crucial for career changers and career starters to compensate for lack of professional experience.
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