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Diagram showing the three categories of API: internal, partner, and open API

Open Banking

How Many Types of API Are There?

API, used as an abbreviation for Application Programming Interface, is an interface that allows an application's functions to be accessed and used from outside or remotely, letting a server application be reached from different platforms.

Shopper at an online checkout seeing a failed payment message because of an insufficient funds check

Online & Authorization

Why Do Your Payments Fail? How Funds Confirmation APIs Solve It

You press the pay button and the screen says the transaction failed. Behind that failure are checks on your balance and transaction security. This post explains how funds confirmation APIs work, where they apply, and the situation in Turkey's open banking.

Diagram illustrating how an API connects applications and servers

Payment Institutions & E-Money

What is an API?

Used as an abbreviation for Application Programming Interface, an API is an interface that allows an application's functions to be accessed and used from outside or remotely, letting an application on a server be reached from different platforms.

BKM API BIN list update illustration

Payment System Institutions

What Is the BKM API?

Thanks to the API developed by BKM, BKM Express member merchants can automatically update the BIN lists of cards issued by all banks in Türkiye and offer installments and reward points more efficiently.

BKM API gateway integration deadline

Payment Systems

Target Date for BKM API Gateway Integration Amended

An amendment was made to the communiqué on the information systems of payment and e-money institutions and data sharing services, setting 31/3/2025 as the deadline for other payment service providers' obligations.

Diagram illustrating the PSD (Payment Services Directive) regulatory framework

Merchant & POS

What is PSD (Payment Services Directive)?

PSD stands for Payment Services Directive, known as the Payment Services Law. It took effect in EU countries in 2009, and in 2015 new revisions were announced as PSD1, aiming to build an efficient, fast, secure, and competitive payment market.

Illustration representing open banking and banking as a service with digital banking and API connection icons

Open Banking

What are the differences between Banking as a Service and Open Banking?

First, it is useful to briefly recall the concepts of Banking as a Service and Open Banking. Banking as a Service (BaaS) lets interface developers connect directly to service banks' systems via APIs and open banking services to run banking transactions for customers...

Diagram illustrating open banking, where customer financial data is shared with fintech companies through APIs

Payment Institutions & E-Money

What Is Open Banking?

Open banking means sharing customers' financial information with a third-party fintech company so that a range of banking and financial services can be offered to them. It works through API integrations. This post covers its status in Turkey and the new BRSA regulation.

Illustration of embedded finance, with payment, credit, insurance and investment services built into everyday digital platforms

Open Banking

What Is Embedded Finance?

Embedded Finance means integrating financial products and services into non-financial platforms, experiences or business processes. In other words, services offered by financial institutions become part of the product or service flows of non-financial organizations.

Account Information Service Provider concept icon

Payment Systems

What are Account Information Service Providers?

Digital Account Checking underpins many innovative banking and FinTech services. In most cases, it is performed by Account Information Service Providers, which supply data from customers' online bank accounts to other banks and third-party providers.

Illustration of a closed-loop payment ecosystem growing through loyalty, data, and new services

Closed-Loop Payments

Why Do Closed-Loop Payment Systems Want to Grow? | Series #6

Why does a coffee chain build its own loyalty program, and why does a payment app keep adding services? This post looks at how loyalty, data, and new services drive the growth of closed-loop payment systems, and at the financial layers behind that growth.