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Notes from production engagements — architecture decisions, tooling choices, and the tradeoffs behind each build.
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Inheriting Complexity: How We Modernized a Multi-Account AWS Data Platform
No greenfield rebuild. No one-time cleanup. Tech Stack Playbook inherited a fragmented multi-account AWS estate at a global healthcare research enterprise — ...
Against the Black Box: How We Engineered Transparent Health Scoring for Vitera
Whoop shows you a number. Oura shows you a ring. Neither will tell you why. Tech Stack Playbook engineered Vitera — an iOS health analytics platform with ful...
We Recovered a Compromised AWS Account in Under 24 Hours: Here's the 14-Step Lockdown Protocol
An executive advisory firm's AWS root account was compromised — attacker launched a quarter-million-email abuse campaign, uploaded malware to S3, and got the...
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