CPA Partners Success
2026-05-11 23:42:14

CPA Excellent Partners Integrates 800,000 Student IDs with Tactna and Auth0 in Just Five Months

CPA Excellent Partners Integrates 800,000 Student IDs



In an impressive feat, CPA Excellent Partners, a leader in student career support and education, has integrated approximately 800,000 student IDs into a unified system within just five months. This integration was facilitated through TC3’s Tactna and Okta's Auth0 platforms, marking a significant step in enhancing both security and user experience across multiple educational services.

Background of the Project: Uniting a Vast User Base


CPA Excellent Partners, headquartered in Tokyo’s Shinjuku district, operates a variety of educational platforms like CPA Accounting Academy, CPA Learning, and CPA Jobs, serving over 800,000 students. Although each service was individually optimized, the company sought to unite them under a common ID system to improve user experience, maximize data utilization, and enhance security measures. This project was aimed at transitioning to a phase where user engagement would be significantly enhanced.

Successes and Features of the Integration


To achieve a successful integration process, CPA Excellent Partners and TC3 broke the project down into two phases. The first phase, completed in October, involved integrating the CPA Accounting Academy, followed by the CPA Learning and CPA Jobs in November. Utilizing Tactna and Auth0, the following remarkable outcomes were achieved:

1. Dramatic Reduction in Development Time and Costs: Compared to fully custom development, CPA Excellent Partners reduced initial costs by two-thirds and improved time-to-market speed by 50%, effectively halving the expected duration.

2. Standardization of Complex ID Integration Flow: A seamless and secure account integration module was developed for users with existing IDs across multiple services. This was accomplished using Tactna’s standard and custom features to address the technical complexities involved in user account linking.

3. User Convenience Assurance: The integration leveraged previous implementation references from Tactna, allowing login via email addresses alongside traditional student numbers, thus enhancing overall user accessibility.

Future Prospects


Looking forward, CPA Excellent Partners aims to utilize this integrated platform as a foundation for providing enhanced services to finance and accounting professionals. Tactna is committed to delivering solutions that can support such use cases effectively.

Customer Feedback


Toshikazu Ogawa, CTO of CPA Excellent Partners, expressed satisfaction with the outcomes, stating, “For a platform with around 800,000 registered users, enhancing user experience and security is a top priority. Initially, we considered a fully custom development; however, by choosing the combination of Tactna and Auth0, we were able to reduce costs significantly and complete the project within an unprecedented timeline of six months. Specifically, Tactna’s migration module that safely integrates existing users was of paramount importance in eliminating technical uncertainty. Now with a robust common ID in place, we can focus more resources on providing next-generation services through AI agents and enriched user experiences.”

Okta's Contribution
Takahiro Watanabe, President of Okta Japan, also commented on this successful collaboration stating, “We are thrilled that Auth0 was able to contribute to the realization of CPA Excellent Partners’ vision. The advanced implementation capabilities of TC3’s Tactna enabled the complex migration of such a large user base to be completed in a short time frame, setting a remarkable precedent for Japanese companies aiming to modernize identity management.”

Conclusion


The integration of a platform that serves a vast user base of 800,000 daily sign-ins is a monumental step forward for CPA Excellent Partners. By utilizing Tactna and Auth0, they have significantly accelerated the speed of implementation. TC3 plans to continue supporting the operation of this platform, striving to contribute to the evolving realms of identity-related services.

For more details on this case study, you can visit TC3’s dedicated page, which encapsulates the specifics of this successful project. If you are interested in ID integration or similar solutions, this case study is a must-see.

Check out the full case details here.

TC3 is not only supporting digital service development but also providing essential infrastructure for digital service deployment through its Customer Engagement Hub, Tactna. Leveraging Tactna allows for the quick and high-quality implementation of features necessary for authentication and ID management.

Learn more about Tactna here.


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Topics Consumer Technology)

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