The 7-Layer AI Agent Stack

Most companies deploy AI at the surface. We architect the full stack. Each layer exists because the one above it can't function without it.

Layer 7
Experience
User touchpoints, BI dashboards, Copilot interfaces
Layer 6
Orchestration
Agent control, MCP, Agent-to-Agent (A2A)
Layer 5
Governance
Policy, audit, quality — spans all layers
Layer 4
Context
RAG, memory, data catalog
Layer 3
Semantic
Definitions, synonyms, metrics
Layer 2
Compute & Model
GPU, inference engines, foundation models
Layer 1
Data Platform
Lakehouse → Databricks, Snowflake
Open Format → Delta Lake, Iceberg, Lance DB

Every layer has a reason to exist.

Layer 7

Experience

The interface where humans meet AI. BI dashboards, Copilot assistants, and custom agent UIs — designed so users interact with intelligence, not complexity.

Only as good as the layers beneath. A beautiful chatbot without governance, semantic layer, or data quality is a liability. Foundation first. Experience last.

BI

Governed dashboards and reporting for business decisions

Copilot

AI assistants embedded in everyday work tools

Agent UI

Purpose-built interfaces for human–agent interaction

Dashboard

KPIs and agent performance at a glance

Layer 6

Orchestration

The control plane for AI agents. Which agent handles which task, how agents hand off to each other, and how the system recovers when an agent fails.

MCP (Model Context Protocol) connects agents to tools and data. A2A (Agent-to-Agent) enables multi-agent workflows. We design orchestration so agents are coordinated, not chaotic.

MCP

Standard protocol connecting agents to tools and data

A2A

Multi-agent handoffs and coordinated workflows

Multi-Agent

Specialized agents operating as one system

Workflow

Routing, retries, and recovery when agents fail

Layer 5

Governance

The layer that runs vertically through the entire stack. Access control, audit trails, quality checks, and policy enforcement — not bolted on, but woven in.

Governance isn't a gate. It's the immune system. Every agent action is traceable. Every data access is authorized. Every output is auditable. Without this layer, scale becomes risk.

RBAC / ABAC

Role- and attribute-based access across the stack

Audit

Traceable agent actions and data access

Policy

Rules enforced at design time, not bolted on later

Quality

Data and output checks woven into every layer

Lineage

End-to-end visibility from source to agent output

Layer 4

Context

Where agents get their knowledge. RAG pipelines retrieve relevant documents, memory systems retain conversation history, and data catalogs provide structured metadata.

Without context, an agent is just a language model guessing. With the right context, it becomes a domain expert. The quality of this layer determines whether your agents are useful or dangerous.

RAG

Retrieve relevant knowledge to ground agent responses

Vector Store

Embedding storage for semantic search and retrieval

Memory

Conversation and session context over time

Data Catalog

Structured metadata agents can trust and query

Layer 3

Semantic

The shared language of the organization, made machine-readable. Business definitions, metric formulas, synonyms, and relationships — encoded so that both humans and agents interpret data the same way.

When "revenue" means three different things across three departments, no agent can give a consistent answer. The semantic layer eliminates ambiguity at the source.

Metrics

Shared KPI definitions across the organization

Definitions

Machine-readable business terms and formulas

Synonyms

One meaning, many names—resolved at the source

Ontology

Relationships between entities and concepts

Layer 2

Compute & Model

The engines that power intelligence. Foundation models for reasoning, specialized models for domain tasks, and the GPU infrastructure to run them at scale.

We are model-agnostic. The right model for the right task — not the biggest model for every task. Inference cost, latency, and accuracy are engineering decisions, not marketing decisions.

LLM

Foundation and domain models for reasoning

GPU

Compute for training and inference at scale

Inference

Latency, cost, and routing as engineering choices

Fine-tuning

Adapt models to domain without full retraining

Layer 1

Data Platform

The foundation — designed to avoid vendor lock-in and keep data flowing freely across the stack.

Lakehouse →

Databricks

Unified data engineering, analytics, and ML

Snowflake

Cloud DW and AI workloads at scale

Open Format →

Delta Lake

ACID tables on object storage

Iceberg

Lakehouse tables with safe evolution

Lance DB

Multimodal and vector data for AI

Every layer above depends on the quality, accessibility, and governance of the data below. The platform isn't infrastructure — it's the prerequisite for everything the organization wants to do with AI.

Agents without architecture is automation without accountability.

Most AI projects fail not because the model is wrong, but because the layers underneath are missing. An agent without governance is a risk. An agent without a semantic layer gives inconsistent answers. An agent without a data platform has nothing reliable to work with.

ENGORGIO builds all seven layers. We don't start from the top and hope the foundation exists. We start from Layer 1 and build upward — because the value of AI is determined by the architecture beneath it.

Ready to build the architecture
your agents need?

The first conversation: where you are in the stack — and what to build before agents deliver real value.