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RAG · LANGCHAIN · VECTOR SEARCH · DOCUMENT INTELLIGENCE

RAG Implementation: Making Enterprise Documents AI-Ready — Structured, Secure, and Scalable

Retrieval-Augmented Generation (RAG) is currently the most in-demand approach for making internal knowledge bases, policy documents, and contract repositories accessible to AI assistants — without passing data to external models or going through expensive fine-tuning processes. I guide companies from requirements gathering and architecture evaluation (LangChain, LlamaIndex, Azure AI Search) through chunking strategy to production-ready handover to the development team — as a Business Analyst and Project Manager focused on governance and compliance.

Typical Situations

  • Employees spend significant time on manual document search — policy documents, contracts, or manuals are hard to search effectively
  • IT delivered a LangChain or Azure AI pilot, but answer quality is inconsistent and the business team doesn't understand the architecture
  • The organization wants to use RAG, but data protection and compliance requirements are unresolved
  • Regulated environment (bank, insurer): internal policies, compliance documents, and regulatory circulars should become searchable — with traceable source references
  • Chunking strategy and embedding model selection are open — nobody knows how to optimize for the specific document type
  • An existing pilot has a high hallucination rate — retrieval quality assurance and evaluation concept are missing
  • Management has approved budget for RAG, but no structured requirements document exists for procurement or development

Deliverables

RAG requirements specification: document sources, user requirements, quality criteria, and scope boundaries
Architecture evaluation: comparison of LangChain vs. LlamaIndex vs. native cloud solutions (Azure AI Foundry, AWS Bedrock) — documented decision matrix
Chunking strategy: document-type-specific segmentation recommendation (fixed-size, semantic, hierarchical)
Embedding model selection: evaluation and rationale (OpenAI Ada, Azure AI, Sentence Transformers, Cohere)
Retrieval quality assurance: test cases, evaluation concept (Precision, Recall, MRR), hallucination monitoring
Data protection & compliance: GDPR clearance, data flow documentation, model selection rationale for compliance teams
Governance framework: prompt versioning, document update processes, quality review cycles
Handover documentation: complete development requirements, test cases, and operating concept

Steering & Governance

RAG Project Steering: Structured steering of RAG projects — from document selection and architecture decisions through pilot operations and quality assessment to go-live approval. Decision papers for stakeholders, IT governance, and compliance committees. Clear milestones instead of endless iteration without direction.

Retrieval & Prompt Governance: Versioned prompt library, documented chunking and embedding decisions, retrieval quality metrics, and monitoring concept. The foundation for transparent and maintainable RAG solutions — especially important when new documents can change system behavior.

Compliance & Data Protection Documentation: Documented data flows, model selection rationale, GDPR compliance (DPIA, processing register), and EU AI Act risk classification. Audit-ready documentation for Data Protection Officers, compliance teams, and auditors — standard practice in regulated industries.

Data Protection & Regulatory Requirements

RAG systems often process sensitive internal documents. In regulated industries, additional requirements apply. I work closely with compliance and data protection teams to:

  • Document data flows transparently: which documents are indexed? Where are embeddings stored? Which data is sent to external model providers?
  • Clarify GDPR requirements: processing purpose, legal basis, DPIA for new processing activities (Art. 35 GDPR)
  • Document model selection and provider governance transparently (EU AI Act, BAIT, VAIT for FinServ)
  • Integrate hallucination risks and source reliability into the quality assurance concept
  • Address DORA requirements for AI-powered information systems in financial institutions

Project contexts are anonymized. Roles and outcomes are accurately described; details available under NDA.

Project Examples (Anonymized)

RAG · LANGCHAIN · INSURANCE

Insurance Company: Policy Document Search with RAG and LangChain

DACH Insurance Company — Knowledge Management

Challenge: Thousands of pages of insurance terms and internal policies were not efficiently searchable. Employees spent an average of 20 minutes per query on manual document search — a significant efficiency gap.

Role: Technical Business Analyst: RAG concept, LangChain stack evaluation, chunking strategy, and pilot requirements; handover to development team

Results:

  • LangChain evaluated against LlamaIndex and Azure AI Search — documented decision matrix with 8 evaluation criteria
  • Chunking strategy and embedding model selection for insurance documents (hierarchical chunking) specified
  • Pilot requirements with 30 defined test cases and quality criteria handed over
  • Governance framework for prompt versioning and model updates established

Note: Project contexts are drawn from previous consulting and industry roles. Content is anonymized; roles and results are accurately described.

RAG · COMPLIANCE · FINANCIAL SERVICES

Financial Institution: RAG-Based Compliance Document Search

German Financial Institution — Regulatory Intelligence

Challenge: The compliance team regularly needed to search regulatory circulars, internal policies, and regulatory requirements. Classical full-text search returned too many irrelevant results; response time was too slow for time-critical compliance decisions.

Role: Business Analyst and Project Manager: requirements gathering, architecture review (Azure AI Foundry), GDPR clearance, and structured handover

Results:

  • Requirements specification for semantic search with source attribution and confidence scoring
  • Architecture decision Azure AI Foundry vs. LangChain documented and aligned with IT governance
  • GDPR data flow documentation: indexing, embedding storage, external model requests
  • Evaluation concept with 25 test cases derived from real compliance queries

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Last updated: February 2026