In 2006, Atos Worldline included in its scope the Belgian companies Banksys, responsible for securing and guaranteeing electronic payments in Belgium, and Bank Card Company (BCC),[6] specializing in the management of payment systems linked to the country's two largest credit card networks, Visa and MasterCard.

In 2012, Atos Worldline acquired and integrated Quality Equipment, a Dutch electronic payment company, for an unknown amount.

As part of this merger, Worldline paid out 72 million euros and owned 63.6% of the created equensWorldline Company, the rest being held by the shareholders of Equens, Dutch, German and Italian banks.

[14] In July 2017, Worldline announced the acquisition of the Swedish company Digital River World Payments (DRWP) for an undisclosed amount.

[24] In February 2020, Worldline announced the acquisition of Ingenico, the world leader in payments POS market and in merchant services, for €7.8 billion.

In July 2021, the Group announced the purchase of 80% of Axepta Italy, a subsidiary of BNP Paribas, for 180 million euros[30] In October 2021, Worldline announced its Q3 2021 revenue and, as planned at the time of the Ingenico's acquisition, the new governance of the Group was implemented by the Board of Directors, with Bernard Bourigeaud appointed as Chairman while Gilles Grapinet remains CEO.

[31] In March 2022, Worldline, announced its business expansion to Japan, offering credit card payment processing for merchants nationwide.

[32] In February 2022, Worldline announced that it had entered into exclusive negotiations with the Apollo funds for the sale of its subsidiary TSS, which had taken over Ingenico's payment terminal activities, for 2.3 billion euros.

[34] In April 2023, Crédit Agricole and Worldline enter into exclusive discussions to create a major player in merchant services in France.

Both groups announce the contemplated creation of a joint company fully operational by 2025 combining Crédit Agricole’s merchant acquiring footprint, French market intimacy and distribution power with Worldline’s leading innovation, technology and global infrastructure.

Critics argue that such actions contradict global sanctions and ethical considerations, as the war in Ukraine persists with devastating consequences for civilians.