Engineering notes you can verify
Hands-on decisions and honest limitations, not fabricated AI performance claims, client counts or certifications. Browse the public engineering notes written for builders and operators.
Edge-first architecture: what belongs at the edge? ↗
A practical decision model for static delivery, edge functions, databases and asynchronous work.
Read article →SECURITY · 18.10.2026Browser-local tools: privacy boundaries and security trade-offs ↗
Understand storage, file imports, sanitization and the guarantees a browser-native app can actually make.
Read article →PRODUCT ENGINEERING · 18.10.2026Designing a portable workflow schema ↗
A field guide to workflow steps, deterministic simulation and future execution engines.
Read article →MEASUREMENT · 18.10.2026How to measure automation without invented AI metrics ↗
Outcome-first analytics and honest performance reporting for early software products.
Read article →PLATFORM · 18.10.2026Shipping a verifiable static product on Cloudflare Pages ↗
The concrete deployment, versioned assets, DNS and rollback discipline behind the HDGroup website.
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Editorial standard
Articles distinguish shipped behavior from reference architecture and proposals. Dates reflect publication, not customer adoption. Vendor limits should always be checked against current official documentation.