ZEUS is a payment platform from ZEUS Co. Ltd., part of the SBI Group, established in 1994. It lets businesses accept credit cards, bank transfers, convenience store payments, and carrier billing with a strong implementation track record nationwide.

The service offers both B2C e-commerce payments and specialized B2B inter-company transaction services through its Biz Credit Card series. It provides industry-specific payment solutions including Gakkai PAY for academic societies, Lesson PAY for online education, and Study PAY for cram schools, and supports payments for both online stores and physical locations.

The platform supports EMV 3-D Secure authentication to verify cardholder identity during transactions, helping reduce fraudulent card use and chargebacks.

Merchants can accept QR code payments through multi-payment terminals that support various Japanese mobile wallets for both online and in-store transactions.

Developers can integrate payment processing through API connections for custom system implementations, particularly useful for B2B platforms requiring deep integration with existing business workflows.