Markus Ostertag
Tech Executive, AWS Hero & Cloud Enthusiast
I’m a Tech Executive, AWS Hero, and long-time cloud enthusiast based in Munich. I build teams, solve problems, and share what I learn - on stage, in the community, and here on this site.
Latest Posts
Twelve Years of Showing Up - Organizing the AWS User Group Munich
I've run the AWS User Group Munich for over twelve years - through a cancelled speaker tour, a full COVID pause, and over a decade of showing up. Here's what actually keeps a volunteer-run community alive after the excitement fades.
The Shared Responsibility Model is Shifting
The AWS shared responsibility model isn't a fixed line - it's a slider. Where it sits depends on which services you choose, and that has real consequences for cost, staffing, sovereignty, and security.
Buy vs. Build in the Age of AI
AI made building feel free, and everyone is rushing to build. But for production systems, the cost of v1 was never the problem - operating and evolving it was. Sometimes buying is still the smarter call.