Arkajit Das
I write clear books and build software tools that make computers work faster and cost less money.
Topic Pillars
Explore All Pillars →Enterprise AI
Autonomous agent consensus gates, telemetry assertions, and cutting 60% of cloud GPU waste.
Product Leadership
Why small teams of 5 to 10 builders outcompete 100-person departments, capital discipline, and CPO strategy.
Data Trust
Sub-350ms verification loops, ephemeral in-memory privacy vaults, and zero disk residue at Fraoula.
Start with These 3 Essays
View 10-Essay Reading Guide →Fast Computer Memory
Think of a desk and a basement storeroom. Computer memory is your desk; hard drives are the storeroom. Keeping data on your desk answers questions in a split second.
Saving $12 Million
When companies leave empty rented computers running 24/7, bills explode. Here is how turning off idle computers saved twelve million dollars in one year.
Small Teams, Big Software
Why big teams get stuck in long meetings. Learn why a focused group of five skilled builders can move faster and ship features every week.
Featured Books
Browse Store →The In-Memory Architecture Handbook
A plain-English guide to building software that answers questions in a split second by keeping active data in computer memory instead of slow disks.
The $12M Cloud Arbitrage Playbook
The exact step-by-step playbook used to find and turn off unused cloud servers, cutting 30% or more from monthly bills.
Small Teams, Big Software
Why focused teams of five to ten builders who own their tools move faster and build better software than hundred-person corporate departments.
Current Focus
See More →Building Fast Software at Fraoula
I lead product design and software building at Fraoula. We create computer tools that check information in less than a second using computer memory instead of slow hard drives. This helps businesses understand their online ads and payments without waiting or wasting money.
Companies I Built
View All →Fraoula
A technology company that helps businesses check their marketing and payments instantly. It runs in computer memory so it never slows down.
Sovereign Software Studio
A small technology group that builds simple, fast software tools. We believe small teams of 5 to 10 talented people can build great software that helps millions of people.
Selected Essays
All 190 Essays →Fast Computer Memory: Why Keeping Data in Memory Beats Slow Hard Drives
Why saving information in fast computer memory is safer, costs less, and answers questions in less than a second.
Saving 12 Million Dollars: How We Turned Off Unused Cloud Servers
How turning off empty cloud servers and fixing simple waste saved 12 million dollars in one year.
Why Software Should Charge for Real Help, Not for User Logins
Why charging for each person's login is an outdated idea, and why smart tools charge for real work completed.
Checking What Works: Using Simple Math Instead of Guesswork
Why companies waste millions guessing which ads worked, and how simple math gives honest answers.
Proven Results
See All 20 Case Studies →Saving $12 Million on Server Bills
Helped a big company find and turn off hundreds of unused cloud computers, saving twelve million dollars every single year without any trouble.
Saving 10,000 Hours of Work
Built computer programs that checked banking payments automatically, saving 10,000 hours of boring manual spreadsheet work every year.
Keeping Systems Running 99.5%
Looked after critical software for an environmental company so it stayed online and working 99.5% of the time all year round.
What People Say
Read All Reviews →"Arkajit explained our cloud infrastructure so clearly that our leadership team approved an automated shutdown project in one meeting. We saved over $300,000 in the first quarter alone."
"Following his design guide cut our system response time from over two seconds down to a fraction of a second. Clear, practical advice with zero fluff."
"Finally, technology books written for human beings. He breaks down complex computer architectures and data workflows into clear lessons anyone can understand."
Master's Research Paper
Read Full Paper →How to Build Successful Data Startups in India
Most new companies fail within five years because they run out of money or build the wrong thing. For my master's degree, I studied 50 real technology startups in India. I found that the founders who spent time doing careful testing and showed strong personal leadership did far better than those who just tried to raise big money without a clear plan.
Helpful Calculators
Try All Tools →Cloud Waste Calculator
Type in how much you spend on Amazon or Microsoft servers each month to see how much money you can save by cleaning up unused computers.
Startup Score Test
Answer 5 simple questions about your company idea to see your score based on my university research on Indian startups.
RAM vs Disk Speed
See a simple demonstration showing why computer memory (RAM) is thousands of times faster than old hard drives.
Need Faster Software or Lower Cloud Bills?
A focused 30-minute private advisory session with Arkajit Das. We will inspect your architecture, review server expenses, and identify immediate savings.