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Hasso Plattner: How SAP Became Europe's Invisible Operating System
52 years inside SAP. Three architectural bets. Europe's most important software founder. The story of how Hasso Plattner built — and held — the platform.
Jörn Menninger
May 2315 min read
The Quiet Co-Founder: Claus Wellenreuther (1935–2026) and the SAP Story Few People Tell
Claus Wellenreuther died March 21, 2026, age 91. He built SAP's financial accounting module, exited in 1980, founded the alternative — and SAP bought it back.
Jörn Menninger
May 2210 min read
The Top 5 Startup Branding Mistakes Founders Must Avoid
Avoid these 5 branding mistakes that kill investor trust and stall your startup’s growth. Fix them before your next pitch.
Jörn Menninger
Jul 14, 20252 min read
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