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  • Writer's pictureDaniela Vidal

Open banking and API-based financial services

Updated: Jan 23

In recent years, open banking has emerged as a buzzword in the financial industry.

With the advent of new technologies and the growth of the digital economy, open banking has become an important tool for banks and financial institutions to meet the evolving needs of their customers.

In this blog, we will explore the benefits and challenges of open banking and API-based financial services.

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What is open banking?

Open banking is a system that enables the sharing of financial data and services between different organizations through the use of open APIs (Application Programming Interfaces).

These APIs allow third-party developers to access financial information from banks and other financial institutions and create innovative products and services that can improve the customer experience.

What is an API, and what is used for?

An API (Application Programming Interface) is a set of protocols, routines, and tools for building software applications.

APIs allow different software programs to interact and communicate with each other, which enables the sharing of data and functionality across different platforms and systems.

APIs provide developers with a standardized way of accessing a specific set of features or data from another application or service without requiring the developer to understand the underlying details of how the service works.

APIs can be used for a wide range of purposes, including:

  1. Integrating different applications or services

  2. Automating tasks or workflows

  3. Developing mobile apps or web applications

  4. Enhancing user experiences and functionality

  5. Enabling data sharing between different systems

  6. Streamlining business processes

For example, many social media platforms provide APIs that allow developers to integrate their applications with the social media platform, enabling users to share content, log in, and perform other actions.

Similarly, many financial institutions use APIs to enable third-party developers to access their data and services, enabling the creation of innovative financial products and services.

When companies have a development team or hire a dedicated team of developers (this service is provided by CodeBranch), they are responsible, among other things, for developing these APIs for different programs and applications to communicate.

The benefits of open banking

1. Improved customer experience: Open banking allows customers to access a wide range of financial services and products, regardless of the provider. Customers can easily switch between different providers to find the best deal or to access new services.

2. Increased competition: Open banking creates a level playing field for new entrants in the financial services market.

This results in increased competition and innovation, which benefits customers through better services and lower costs.

3. Better financial management: Open banking enables customers to aggregate all their financial information in one place, which makes it easier to manage their finances.

This allows for better budgeting and saving decisions, which can lead to increased financial stability and security.

4. Enhanced security: Open banking is built on secure and regulated APIs, which means that customer data is protected against unauthorized access.

Additionally, customers have greater control over their financial data and can revoke access to third-party providers at any time.

The challenges of open banking

1. Data protection and privacy: Open banking involves the sharing of customer data between multiple organizations.

This can lead to concerns over data protection and privacy. To address these concerns, open banking is subject to strict data protection and privacy regulations.

2. Security risks: The sharing of customer data between multiple organizations creates additional security risks.

However, open banking is built on secure and regulated APIs, which minimizes the risk of data breaches and other security issues.

3. Technical complexity: Open banking involves the integration of different systems and technologies, which can be technically complex and challenging.

However, with the right expertise and resources, banks and financial institutions can successfully implement open banking and reap its benefits.

4. Cost: Open banking requires significant investment in technology and infrastructure.

However, the benefits of open banking, including increased customer loyalty, improved customer experience, and reduced costs, can outweigh the initial investment.

Examples of open Banking

Open banking has gained significant momentum in recent years, and there are several examples of open banking initiatives around the world.

Here are a few examples:

1. Europe: In 2018, the EU introduced the Payment Services Directive 2 (PSD2), which requires banks to open up their APIs to third-party providers.

This has enabled the creation of a wide range of innovative services, such as aggregation tools, account information services, and payment initiation services.

2. United Kingdom: The UK has been a pioneer in the adoption of open banking, with the launch of the Open Banking Standard in 2016.

This standard requires banks to open up their APIs to third-party providers, and has enabled the creation of a wide range of innovative services, such as budgeting tools, investment apps, and loan comparison services.

3. United States: The US has also seen the growth of open banking initiatives, with a number of banks and financial institutions opening up their APIs to third-party developers.

For example, JPMorgan Chase has launched an API platform that allows developers to access its data and services, while Wells Fargo has launched a developer portal that provides access to its APIs.

4. Asia: In Asia, open banking initiatives are also gaining traction. For example, in Singapore, the Monetary Authority of Singapore has launched an API Exchange (APIX) platform, which allows financial institutions to access a range of APIs from different providers.

In Japan, the government has launched an open banking initiative that aims to increase competition and innovation in the financial sector.

These are just a few examples of open banking initiatives around the world. As open banking continues to evolve, we can expect to see more innovative services and products emerge that will benefit consumers and businesses alike.


Open banking and API-based financial services have the potential to revolutionize the financial industry.

By enabling the sharing of financial data and services, open banking can improve the customer experience, increase competition, and enhance financial management.

However, open banking also poses challenges related to data protection and privacy, security risks, technical complexity, and cost.

Despite these challenges, open banking is likely to play an increasingly important role in the financial industry in the coming years.

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