About

Hi, I'm Varatharajan.

Data & AI practitioner writing deep-dive guides on how modern data platforms and AI systems are designed, built and run.

I also run the YouTube channel Data & AI with Varath, where many of these topics get a companion video. The blog is the written, searchable, deeper version — each article links to its video and each video links back here.

The Data & AI Stack is where I publish long-form, research-backed guides on the end-to-end data & AI stack — from how data is captured at the source, through storage, transformation and governance, all the way to analytics, machine learning and generative AI agents.

What you'll find here

• Deep dives, not listicles — each article aims to be the one reference you bookmark on the topic.
• Structured series that build on each other, starting with Data Architecture.
• Vendor-neutral analysis with honest trade-offs, decision frameworks and diagrams.

Stay in touch

Subscribe by email using the form below, follow along via RSS or on LinkedIn. Corrections and suggestions are always welcome.