Tuesday, December 30, 2025

Healthcare AI System Architecture

 



"𝗧𝗵𝗶𝘀 𝗢𝗻𝗲 𝗗𝗶𝗮𝗴𝗿𝗮𝗺 𝗥𝗲𝗱𝘂𝗰𝗲𝗱 𝗔𝗜 𝗖𝗼𝘀𝘁 𝗯𝘆 𝟳𝟭%"

We didn’t change models. We changed where intelligence lives.

𝗧𝗵𝗲 𝗖𝗼𝗺𝗺𝗼𝗻 𝗠𝗶𝘀𝘁𝗮𝗸𝗲
Most engineering teams try to reduce AI cost by:
• Switching LLM providers
• Tuning prompts endlessly
• Debating benchmarks

That’s not where the leverage is.
The real shift happened when we stopped treating the model as the brain
and started treating the system as the brain.

𝗪𝗵𝗮𝘁 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗖𝗵𝗮𝗻𝗴𝗲𝗱
We introduced a 𝗠𝗮𝘀𝘁𝗲𝗿 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 𝗣𝗹𝗮𝗻𝗲 (𝗠𝗖𝗣) instead of routing everything to a single LLM.

1️⃣ 𝗖𝗮𝗰𝗵𝗲
Repetitive and near-duplicate requests never hit a model again.
2️⃣ 𝗥𝗼𝘂𝘁𝗲𝗿
SLMs handle execution-heavy tasks.
LLMs handle judgment and ambiguity.
3️⃣ 𝗖𝗼𝗻𝗳𝗶𝗱𝗲𝗻𝗰𝗲 𝗚𝗮𝘁𝗲𝘀
High confidence → instant response
Low confidence → controlled escalation
4️⃣ 𝗙𝗮𝗹𝗹𝗯𝗮𝗰𝗸𝘀
RAG, memory, or a stronger model — only when required.
No blind retries. No runaway costs.

𝗧𝗵𝗲 𝗢𝘂𝘁𝗰𝗼𝗺𝗲
• 71% reduction in AI cost
• Lower latency across workflows
• Predictable production behavior
• Fewer on-call surprises
Same models.
Very different results.

𝗧𝗵𝗲 𝗧𝗮𝗸𝗲𝗮𝘄𝗮𝘆
Architecture beats optimization. Always.


8-Layered Architecture of Agentic AI

 


Everyone talks about Agentic AI.

But almost no one understands the 8 layers holding it together.

The biggest mistake teams make is thinking agentic AI is just about building agents. It is about designing an entire architecture that can think, act, and improve autonomously.

Here is the simplified blueprint top teams use today:

𝟏. 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 𝐋𝐚𝐲𝐞𝐫
Where reliability and scale come from, your cloud and observability stack, think Grafana, Azure Kubernetes Service, Google Cloud, Terraform.

𝟐. 𝐀𝐠𝐞𝐧𝐭 𝐈𝐧𝐭𝐞𝐫𝐧𝐞𝐭 𝐋𝐚𝐲𝐞𝐫
How agents actually reach each other, routing traffic across services with tools like Pinecone, ZeroMQ, Kubernetes, Docker.

𝟑. 𝐏𝐫𝐨𝐭𝐨𝐜𝐨𝐥 𝐋𝐚𝐲𝐞𝐫
The language agents use to talk, standard message formats and APIs such as MQTT, GraphQL, gRPC, WebSocket, Protobuf.

𝟒. 𝐓𝐨𝐨𝐥𝐢𝐧𝐠 𝐋𝐚𝐲𝐞𝐫
Where models get real world powers, orchestration and tools like LangChain, OpenAI, Jupyter, Rasa connect agents to data and actions.

𝟓. 𝐂𝐨𝐠𝐧𝐢𝐭𝐢𝐨𝐧 𝐋𝐚𝐲𝐞𝐫
Your reasoning engine, frameworks like Keras, PyTorch, IBM Watson, scikit learn that train and run the brains of your agents.

𝟔. 𝐌𝐞𝐦𝐨𝐫𝐲 𝐋𝐚𝐲𝐞𝐫
Short and long term memory for context and personalization, vector and data stores such as Weaviate, Redis, MongoDB, Chroma.

𝟕. 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐋𝐚𝐲𝐞𝐫
Where users feel the value, AI native apps and channels built with platforms like Botpress, Shopify, AWS, Notion.

𝟖. 𝐆𝐨𝐯𝐞𝐫𝐧𝐚𝐧𝐜𝐞 𝐋𝐚𝐲𝐞𝐫
Guardrails for safety and operations, monitoring, policy, and CI with tools such as Datadog, HashiCorp Vault, Open Policy Agent, Jenkins.


Teams that win are the ones who build every layer intentionally.
If your AI is not improving on its own, you do not have agentic intelligence yet. You have automation.