[Financial D-Tact] Is Tosbank an IT company?

As Toss, a mobile-based service, entered the Internet banks and securities businesses, there is also a growing interest in how Toss’s identity is melting into the financial industry. This is because Tosbank has attracted 2.9 million customers as of May, even though he did not have a strong shareholder like K-Bank and had no Kakao Lens, which was the early days of Kakao Bank.

When Toss entered the Internet banks, the most important question was Toss ‘Is Toss an IT or a financial company?’ Lee Seung-gun, CEO of Toss’s operator Viva Republica, said he was “financial business” at the time, but when he was approved for preliminary Internet banks. (Of course, the requirements for the establishment of Internet banks have changed, but Toss’s main sales have changed from financial fees to platform advertising fees.)

If Toss is classified as an IT company, what DNA is transplanted? Tosbank has talked about another IT architecture from an existing bank. Except for the system account (Core Banking), which deals with banks’ core tasks, we have chosen a micro service architecture (MSA).

The concept compared to the micro service is the monolithic. The micro service is a micro-designed system, and the monolithic is made of a bunch of bumps.

It is easy to understand people as an example. Micro services are independently composed of each part of the person’s body, arms, and legs, and monolithic is a way to move only with one body. Let’s say there is a task of transplanting a chainsaw instead of arm. The micro service can be changed by changing the separated arm with a chainsaw and testing performance, but the monolithic should plan how to separate the arm from the body, separate the arm, and then connect the chainsaw.

For this reason, micro service is a good time to roll a modular service when adding new services, but monolithic should look at whether the new service is well attached to the whole body or as a whole. When existing banks add a variety of functions, the system will be designed as a monolithic that it is also a monolithic that stops the transaction for the reason for the computer system maintenance. Micro services that connect only modules can respond quickly to module, so labor costs for maintenance will be relatively small compared to monolithic.

In the case of Tosbank, the credit, reception, and card services are separated from servers and databases, and are designed to be called only through communication such as HTTP API instead of direct reference of the system.

In particular, Tosbank’s explanation is that Tosbank and Toss Securities are running on one mobile application (app) toss, so they have chosen a micro service architecture so that some disorders do not spread to the entire system.

Recently, Tosbank Park Joon-ha, chief technology officer (CTO), said, “There are many places that adhere to IT systems in many businesses as well as banks, but IT service architecture needs to be managed as it has made great progress.”.

However, MSA has a variety of modules that it is difficult to manage and monitor, and it is difficult to do integrated testing. In response, Tosbank Park Jun-ha, chief technology officer (CTO), said, “There are a lot of split services, but the problems of resource waste have been solved by technology development.” The process of splitting the service is not led to waste. ”

In the future, Tosbank plans to integrate new IT systems into the account system. It is also considering separating the system in consideration of the influence between the organization and the service.

Park Jun-ha said, “The Tosbankdo account system is still maintaining the existing financial company (monolithic) in the process of building a banking service quickly.”.

Park CTO said, “We are attempting to incorporate some open sources in the account system, especially using KAFKA to deliver events.” “We are changing the platform so that we can do it very quickly.”

Digital Contact is now a daily life, and G-Di’s ‘Financial D-Tax’, which bits, tears, and tastes digital issues for the financial sector for a week, is serialized every other Saturday. In addition to the story behind the digital transition, as well as the details that were not melted into the articles, we introduce to the readers of G-Dinet Korea. [Editors]

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