obue.de · Issue 01 · 2026Stuttgart · eu-central-1

I'm Oliver.Cloud Architect& Specialist.

I think out loud about cloud architecture. About Landing Zones that hold thousands of accounts, security that convinces auditors, and running AWS at enterprise scale: what breaks, and how to prevent it.

Portrait Oliver Bühler
Senior Cloud Security Architect
Tallence AG
AWS Certifications
Solutions Architect ProDevOps Engineer ProSecurity SpecialtyAdvanced NetworkingMachine LearningSolutions Architect Assoc.Developer Assoc.SysOps Admin Assoc.AI PractitionerCloud Practitioner
Topics I think about

What this site is about.

All Posts
01Landing Zone

Multi-account architectures that scale.

Why governance and developer experience don't have to conflict, and how Control Tower makes both work.

02Security & Compliance

Security architectures that convince auditors.

CIS benchmarks, ISO 27001, C5: thought of as code rather than PDF, and what that means in practice.

03Serverless Platforms

Platforms that launch fast and scale cleanly.

Lambda, Fargate, Step Functions, API Gateway: where the limits are and where they're not.

04FinOps

Cloud costs you understand and control.

Reserved Instances, Savings Plans, tagging discipline: why most teams fail at tagging.

Now · May 2026
May means Hamburg: AWS Summit - talks, networking, and a pulse check on what's moving in the cloud world right now. At the same time, I'm excited about the launch of Tallence AG's new Cloud Portfolio - a milestone I contributed to that reflects how we approach enterprise cloud projects today.
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Write to me about AWS, architecture, or anything.

This site is not a service offering. I work full-time at Tallence as an AWS architect. For a technical exchange, a review, a talk, or a community conversation, get in touch.