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RAG 101 for Enterprise
The true power of LLMs is with RAG. Get real-time, accurate answers from your private data, without expensive retraining.
In today’s edition, I will break RAG down and show you why it matters, and give you a practical way to think about RAG for your work.
Today’s edition is based on my session at AI Engineer HQ
In today’s edition:
AI Deep Dive— RAG 101 for Enterprise
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[AI Deep Dive]
RAG 101 for Enterprise

If you’ve been following the AI world, you’ve probably seen the term RAG thrown around a lot.
It may sound technical, but the idea is simple, and it’s one of the most significant shifts in how enterprises utilize AI today.
The Problem
Every company has more data than anyone can handle:
structured data like CRMs, ERPs, SQL databases
unstructured data like word docs, PDFs, wikis, emails, slack/discord messages
semi-structured data lie JSON logs, XML configs
other formats: like spreadsheets, audio transcripts, images
Traditionally, finding the right answer inside all this is painful:
you need SQL skills or BI dashboards for structured data
keyword search often fails on unstructured docs
information is stuck in silos
data gets outdated fast
This means knowledge exists, but access is slow, fragmented, and frustrating.
Where LLMs Help and Where They Fail

Large Language Models (LLMs) like GPT or Claude seem like a solution.
You ask a question in plain English, and they give you an answer.
But by themselves, LLMs are risky for enterprise use:
they only know what they were trained on (no company-specific data)
they can make up answers that sound right but aren’t thus hallucinations
you can’t dump millions of documents into them thus context limit
you can’t just hand sensitive company data to public models thus data privary
they don’t show where the answer came from thus citations.
So we need something better.
Retrieval-Augmented Generation

RAG is an architecture that grounds LLMs in real, up-to-date knowledge.
It works in three steps:
1) Retrieval
Search your knowledge base (internal docs, databases, real-time feeds) for the most relevant pieces of information.
2) Augmentation
Merge that retrieved info with the user’s query to create a richer, well grounded prompt.
3) Generation
The LLM uses this prompt to generate a clear, natural language answer with the retrieved facts.
Think of it like augmented reality for knowledge.
Just as AR overlays digital objects on the real world.
RAG overlays an LLM’s reasoning on top of your company’s trusted data.
How RAG Works in Practice

Here’s the typical pipeline:
ingest & index data -> handle query -> build prompt -> generate the answer
1) Ingest & Index Data
collect documents from CRMs, file systems, APIs
clean and preprocess them
break big documents into chunks (paragraphs or sections)
convert chunks into embeddings (vector representations)
store them in a vector database (like pinecone, weaviate, pgvector, faiss, chroma)
2) Handle Query
user asks - “What are the key changes in our Q3 renewable energy report?”
the query is also embedded into a vector
the system finds the most semantically similar chunks in the vector DB
3) Build Prompt
combine the query + top retrieved chunks into a single structured prompt
keep within the LLM’s context window
explicitly tell the LLM - “answer only from the provided context and cite sources”

4) Generate Answer
LLM synthesizes a response using only the grounded info
return the answer + source citations
Why RAG Matters for Professionals

For leaders, PMs, and VPs:
always pulls from the latest data
cuts hallucinations by grounding answers in trusted sources
no need to retrain giant models every time data changes
answers come with citations, which is critical in legal, medical, or financial contexts
teams spend less time searching and more time acting
For engineers and developers:
swap or add new data sources without retraining
keep sensitive data in your own vector DB, not in the model
skills in chunking, embeddings, vector search, and orchestration are more valuable than prompt tricks
context windows don’t limit you anymore; retrieval narrows it down
Challenges You Can’t Ignore
RAG isn’t magic (obviously).
To make it work, teams must get the details right:
data quality
chunking
embedding model choice
vector DB performance
access control
monitoring
Final Thought
RAG is how you unlock real business value from LLMs.
Instead of retraining giant models, you:
keep a clean, searchable knowledge base
retrieve the right information
feed it to the model
get accurate, current, cited answers
It’s pragmatic, scalable, and enterprise-ready.
The companies that master RAG are the ones that will turn AI from a demo into a dependable decision engine.
We do have a product in this area, it’s an on-premises knowledge engine for enterprises.
RAG is not dead!
However, we are in an interesting phase of exploring unique ways to index and retrieve information.
This vectorless RAG framework uses a tree structure index in place of vectors.
Reasoning models will enable methods that mimic human-like search. Early days!
— elvis (@omarsar0)
3:12 PM • Aug 29, 2025
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