SAP Architecture,
Written for Humans.

SAP Solution Architect · 15+ years · Helsinki, Finland

SAP BTPFioriS/4HANAAI IntegrationTech Writing
"In the dark night of all beings awakes to Light the tranquil man. But what is day to other beings is night for the sage who sees." — Bhagavad Gita
Rakesh Narayan — SAP Solution Architect
  • 15+ Years Experience
  • 60+ Project Deliveries
  • 3 Content Categories

Delivered SAP S/4HANA, BTP, and Fiori solutions across multi-vendor, multi-country landscapes — from architecture to go-live.

Latest Articles

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RAG — Retrieval Augmented Generation Explained
Artificial Intelligence 12 min read

RAG — Retrieval Augmented Generation Explained

RAG is the most important technique for making AI reliable in enterprise settings. It gives an LLM access to your documents, data and knowledge at query time — so it answers from evidence, not from memory. This post explains what RAG is, how it works step by step, where vector databases fit in, and how SAP uses it in Joule and AI Core.

RAGRetrieval Augmented Generation
AI Hallucinations — Why They Happen and What You Can Do About Them
Artificial Intelligence 12 min read

AI Hallucinations — Why They Happen and What You Can Do About Them

AI hallucinations are not a bug that will be fixed in the next model update. They are a structural consequence of how large language models work. This post explains what hallucination actually is, why it happens at a technical level, the different types, and what practical steps reduce it — without the hype or the panic.

AI HallucinationLLM Hallucination
MCP — Model Context Protocol Explained
Artificial Intelligence 12 min read

MCP — Model Context Protocol Explained

Anthropic released MCP in November 2024. By March 2026 it had 97 million monthly SDK downloads and support from every major AI vendor. This post explains what MCP is, the problem it solves, how it works architecturally, and why it matters for anyone building or integrating AI systems — including in the SAP world.

MCPModel Context Protocol
What is a Large Language Model (LLM)?
Artificial Intelligence 12 min read

What is a Large Language Model (LLM)?

ChatGPT, Claude, Gemini, Joule — they are all powered by large language models. But what is an LLM actually doing when it responds to you? This post explains what an LLM is, how it is trained, what tokens and embeddings mean, and why LLMs predict rather than think — clearly, without the academic language.

LLMLarge Language Model
SAP S/4HANA vs ECC — The Real Difference
Technology - SAP 12 min read

SAP S/4HANA vs ECC — The Real Difference

Most comparisons of SAP S/4HANA and ECC focus on marketing bullet points. This post explains what actually changed — the data model, the database, the user experience, and what it means for a real SAP landscape. Written by a consultant who has worked with both.

SAP S/4HANASAP ECC
AI Agents — What They Are and How They Work
Artificial Intelligence 12 min read

AI Agents — What They Are and How They Work

Chatbot, copilot, agent — these three words get used interchangeably in 2026 but they mean very different things. This post explains what an AI agent actually is, what separates it from a simple chatbot, how the planning loop works, what tools and memory do, and where agents succeed and fail in practice — without the hype.

AI AgentsWhat is an AI Agent

Core Expertise

Areas where I design, build, and advise.

SAP BTP

End-to-end solutions on SAP Business Technology Platform — integration, extension, and cloud-native development.

SAP Fiori & UX

Designing and building intuitive Fiori apps that put the user at the centre of every SAP interaction.

AI Integration

Embedding AI capabilities into SAP landscapes — from BTP AI services to custom LLM integrations.

S/4HANA

Architecture, migration planning, and implementation of SAP S/4HANA across industries and deployment models.

Digital Transformation

Guiding organisations through SAP-led transformation — from strategy and roadmap to go-live and adoption.

Technical Writing

Making complex SAP concepts accessible — architecture documents, how-to guides, and developer content.

"I spent 10 years building SAP systems in India, then moved to Helsinki. That shift — between two very different ways of working and living — changed how I think about technology, people, and what good architecture really means."

Previously with Accenture; currently at Vivicta (formerly TietoEvry).

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