Technical writing

The ARA Blog

Why the unified decision plane is the missing layer in your ML stack

Every production ML system has three well-understood layers. The fourth, the decision plane, is conspicuously absent from most architectures.

Entity intelligence: what it means for infrastructure to understand identity over time

A user_id is a key. An entity is a first-class object with history, drift, and temporal context. Infrastructure that cannot distinguish the two is not entity-aware.

Serving-path persistence: design constraints and tradeoffs

Sub-millisecond persistence in a synchronous serving path requires specific architectural choices. Every abstraction has a cost. Here is a precise accounting.

EU AI Act Article 13: what transparency actually means for your inference stack

Article 13 uses the word "transparency" twelve times without defining it at the infrastructure level. Here is a technical reading for engineers who need to implement it.

Kafka integration patterns for decision-layer event streaming

Integrating a decision store into an existing Kafka topology is not a schema problem, it is a semantic problem. The events you persist are not the events you produce.

ARA Community Edition: what is included, what is not, and why

A precise description of what is in the Community release, what is gated behind Enterprise, and the reasoning behind every boundary decision.