AI components fail differently than deterministic software — designing systems that degrade gracefully when the model is wrong, slow, or unavailable requires different architecture patterns than traditional fault tolerance.

AI can accelerate legacy modernization but it doesn't remove the hard parts — understanding ancient codebases, making safe incremental changes, and building confidence that the new system behaves like the old one.

Models get deprecated, versions get silently upgraded, and new ones arrive constantly — a platform without deliberate model lifecycle management accumulates version drift that breaks features without anyone noticing until it does.

Adding AI capabilities to a microservices architecture creates new coupling and latency challenges — here's how to introduce AI without breaking the properties that make microservices valuable.

AI workloads are slow, expensive, and variable — event-driven architecture decouples producers from consumers, handles variable LLM latency gracefully, and enables the async patterns that production AI systems need.

The databases underpinning AI applications have evolved beyond adding a vector column to Postgres — here's the full picture of AI-native data patterns and when to use each one.

Picking the right model is an engineering decision with cost, latency, quality, and reliability tradeoffs — here's a framework for making that decision systematically rather than defaulting to the most capable model for everything.

LLMs produce prose by default — getting reliable, schema-valid structured output requires constrained decoding, output parsing strategies, and validation layers that catch the cases where the model still gets it wrong.

Arize Phoenix, Traceloop's OpenLLMetry, and Langfuse all build on OpenTelemetry but make different tradeoffs on what's pre-built versus what you configure yourself — the comparison that matters before picking one.

Embedding models and vector databases are the backbone of RAG systems — here's how to choose embedding models, design vector indexes, and operate vector search reliably at enterprise scale.