SOFTWARE → ABSORBS → BANKING/THE BANK BECOMES A PROTOCOL/MONEY BECOMES PROGRAMMABLE/RAILS, NOT BRANDS/AI IS THE BANKER NOW/THE INFRASTRUCTURE LAYER WINS/SOFTWARE → ABSORBS → BANKING/THE BANK BECOMES A PROTOCOL/MONEY BECOMES PROGRAMMABLE/RAILS, NOT BRANDS/AI IS THE BANKER NOW/THE INFRASTRUCTURE LAYER WINS/SOFTWARE → ABSORBS → BANKING/THE BANK BECOMES A PROTOCOL/MONEY BECOMES PROGRAMMABLE/RAILS, NOT BRANDS/AI IS THE BANKER NOW/THE INFRASTRUCTURE LAYER WINS/SOFTWARE → ABSORBS → BANKING/THE BANK BECOMES A PROTOCOL/MONEY BECOMES PROGRAMMABLE/RAILS, NOT BRANDS/AI IS THE BANKER NOW/THE INFRASTRUCTURE LAYER WINS/

A THESIS ON FINANCIAL INFRASTRUCTURE · 2026

Banking is not being disrupted.
It is being absorbed.

The book and intellectual platform mapping how software, AI, and programmable money are quietly re-architecting the infrastructure of finance — from the inside out.

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banking.io — The Architecture of New Generation Banking, by Bülent Tekmen with Deniz Devrim Cengiz — THE BOOKWork in progress · 2026

PROTOCOLS12

FORMATPrint + Digital

RELEASEQ3 2026

01 · THE ARGUMENT

For a decade we asked which startup would kill the bank. Wrong question. The bank is not being killed — it is being dissolved into software so completely that, soon, there will be nothing left to point at and call a bank.

MOVEMENT 01

Banks become rails.

The license and the balance sheet survive. The brand, the branch, and the relationship do not.

MOVEMENT 02

Software becomes the bank.

Every product company is one API away from issuing accounts, cards, and credit no one calls banking.

MOVEMENT 03

Money becomes programmable.

When value moves at the speed of code, settlement, compliance, and trust are rewritten as logic.

02 · THE LEDGER

Twelve protocols. One structural thesis.

The Death of Traditional Banking

Banks don't die from competition; they die from irrelevance. Why banking survives as a function while the bank fades as an identity.

Money as Code

For 5,000 years money was a noun — a thing you hold. Programmable money makes it a verb: value that executes conditions on its own.

Why Banks Will Become Platforms

The platform model beats the product model — every time. Why banks must become platforms, and why most will fail to make the leap.

The End of Financial Intermediaries

Banks existed because buyers and sellers couldn't find each other. The internet solved that — and code is dissolving the rest. What survives: the human premium.

Programmable Money and the Future of Debt

Debt is 5,000 years old and has barely changed. From the static loan to self-executing debt — when credit becomes code, credit markets are rewritten.

The Rise of AI Financial Agents

The loan officer, the analyst, the relationship manager — each replaced by inference. Autonomy isn't announced; it's a budget you spend, and the currency is trust.

Trust Architecture in the Digital Age

We didn't lose trust in 2008 — we learned it was in the wrong place. Trust migrates from institutions to infrastructure, then to the agents that act for us.

Fintech After the Platform Revolution

Three waves — infrastructure, digitalization, disruption — are over. The fourth is programmable finance: not rearranging the furniture, but demolishing the building.

The Operating System of Global Finance

iOS turned a device into a platform; finance needs the same. The operating system of global finance — Stripe and Plaid were only the preview.

Banking in the Age of Autonomous Intelligence

In 2008 we stopped trusting bankers; by 2030 we won't need them. Four forces converge into an autonomous financial intelligence — the thesis, complete.

The Seven Layers of the Agentic Bank

An OSI model for banking: infrastructure, trust, intelligence, programmable money, agents, orchestration, experience — each layer upgradeable on its own.

When Money Thinks

Smart contracts execute; AI agents reason — and the difference changes everything. Machine-to-machine finance, and a maturity model honest about how little runs autonomously today.

Every protocol runs on evidence — 700 years of financial architecture, scored, computed, and mapped. Explore the research at research.banking.io →

“The most important financial institution of 2030 hasn’t been named yet. But its architecture is already being written — in code, not in charters.”

— Banking.io

THE AUTHORS

Bülent Tekmen

Building AI-native financial infrastructure since 2016 — from credit for the unbanked to the banking-as-a-service rails beneath other companies’ products.

Co-founded Colendi in 2017 — and named it, on purpose, Colendi Yapay Zekâ ve Büyük Veri A.Ş.: Colendi Artificial Intelligence and Big Data Inc. That was the bet, a decade before the industry made it — that finance would be rebuilt as an intelligence problem, not a banking one. Everything since has been the same work: tools for the unbanked at Ininal, credit scoring, and the rails that quietly decide who gets access to credit, capital, and trust beneath other companies’ products.

The vantage point is not a newsroom or a research desk. It is the engineering floor where the pipes are being re-laid — driven by one conviction: banking is necessary, banks are not. The thinking — who to trust, who to fund, how to price risk — is being outsourced to intelligence. The understanding of what those decisions mean, and who answers for them, is not. You can outsource your thinking. You can’t outsource your understanding.

Banking.io is not written from the outside looking in. It is written from inside the machine.

More of the author’s writing lives at tekmen.ai — the essays published from this book, a curated bookshelf, and the working vocabulary behind the thesis.

Deniz Devrim Cengiz

Co-founder and co-writer — a digital-banking builder with three decades inside the institutions this book describes.

Co-founder of Colendi Holding and ColendiBank, CEO of ColendiBank, and a board member of both. He took CEPTETEB from concept to 600,000 customers across thirteen years at TEB, then led digital transformation as Group Chief Digital Officer at National Bank of Kuwait and Group Chief Digital Banking Officer at Burgan Bank. İzmir Science High School; Civil Engineering at Boğaziçi University; an MBA from Istanbul Bilgi University; and INSEAD’s Executive Development Program.

The vantage point is not an observer’s balcony or a consultant’s slide deck. It is the bridge of a vessel already at sea—where regulation, technology, capital, and customer behavior converge, and every decision has consequences. Deniz Devrim Cengiz has spent three decades connecting those dots: from building CEPTETEB and leading digital transformation across NBK and Burgan Bank to co-founding and running ColendiBank. A lifelong learner and global citizen, he moves between banks, fintechs, and startups with one operating belief: transformation is not something an institution announces; it is something its customers can feel.

Banking.io is not written by someone predicting the future of banking. It is written by someone who has repeatedly had to build it.

More of the author lives at denizdevrimcengiz.com

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Banking is not being disrupted.It is being absorbed.