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  2. PayPal - Wikipedia

    en.wikipedia.org/wiki/PayPal

    This is an accepted version of this page This is the latest accepted revision, reviewed on 29 October 2024. American multinational financial technology company "Pay Pal" redirects here. For The Simpsons episode, see Pay Pal (The Simpsons). PayPal Holdings, Inc. Headquarters in San Jose, California Company type Public Traded as Nasdaq: PYPL Nasdaq-100 component S&P 100 component S&P 500 ...

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  4. HTTP 402 - Wikipedia

    en.wikipedia.org/wiki/HTTP_402

    Experimental. The HTTP status code 402 is currently classified as an experimental code within the HTTP protocol. Such experimental codes are introduced to assess new features or ideas and determine their practical application. The designation of the 402 status implies that a payment is mandated to obtain a particular resource or service.

  5. Payment service provider - Wikipedia

    en.wikipedia.org/wiki/Payment_service_provider

    Payment service provider. A payment service provider (PSP) is a third-party company that allows businesses to accept electronic payments, such as credit card and debit card payments. PSPs act as intermediaries between those who make payments, i.e. consumers, and those who accept them, i.e. retailers. [1]

  6. Instant payment notification - Wikipedia

    en.wikipedia.org/wiki/Instant_Payment_Notification

    Instant payment notification (IPN) is a method for online retailers to automatically track purchases and other server-to-server communication in real time. This allows E-commerce systems the opportunity to store payment transactions, order information and other sales internally. IPN messages can represent payment success or failures, order ...

  7. E-commerce payment system - Wikipedia

    en.wikipedia.org/wiki/E-commerce_payment_system

    There are varied types of electronic payment methods such as online credit card transactions, e-wallets, e-cash and wireless payment system. [5] Credit cards constitute a popular method of online payment but can be expensive for the merchant to accept because of transaction fees primarily. Debit cards constitute an excellent alternative with ...

  8. Payment processor - Wikipedia

    en.wikipedia.org/wiki/Payment_processor

    Payment processor. A payment processor is a system that enables financial transactions, commonly employed by a merchant, to handle transactions with customers from various channels such as credit cards and debit cards or bank accounts. They are usually broken down into two types: front-end and back-end. Front-end processors have connections to ...

  9. Timeline of PayPal - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_PayPal

    PayPal rebrands its services for small businesses as PayPal Payments and debuts a number of online, offline, and mobile payment options. [44] 2012: May 30: Product: PayPal InStore is released in the UK with barcodes, but no NFC. [45] 2012: June 19–20: Product: PayPal launches a new, redesigned, sleeker site. [46] 2012: December 13: Product