American Express Payment Gateway vs Viva.com

American Express Payment Gateway has no write-up on Specifiction yet; its figures are above.

Viva.com is a business payments and financial-services platform covering in-person, online, remote and marketplace transactions. Its Terminal app turns supported Android and iOS devices into contactless payment points. Smart Checkout handles more than 40 payment methods, including cards, digital wallets, local methods and direct debit, with saved cards, multicurrency payments and decline recovery. Businesses without an online store can request payment by email, use a virtual terminal or share Quick Pay links. Plugins are available for Shopify, WooCommerce, PrestaShop, OpenCart, Magento and Shopware 6. The developer portal documents Basic Auth, OAuth 2.0, testing environments, responses and error debugging. Viva.com lists recurring and marketplace payments, eight supported currencies and payment acceptance in 30 countries. It offers Android, iOS, web and API access. UK plans start at £3.99/mo, with Omnichannel Default, Standard and Premium plans providing different limits for terminals, websites, transfers and users. The service lists PCI DSS Level 1 status, SCA/3DS support and machine-learning fraud protection.