One method of payment available with Amazon Payments.

For added security, you can switch between an active and inactive access key on your AWS security credentials page.

A string distributed by AWS that uniquely identifies your AWS developer account.

You include this ID in every request.

One method of payment available with Amazon Payments.

The buyer pays the seller for a product or service.

A developer who facilitates payment between a sender and a recipient.

a reversal of a payment issued by the bank when the buyer disputes the charge.

A set of Amazon Payments web pages which lead a user through a secure login and payment authorization pipeline. Once the pipeline is complete, the user is redirected to your website.

The URI that specifies the destination of an API request.

The Hash Message Authentication Code used to authenticate a message.

The HMAC is calculated using a standard, hash cryptographic algorithm, such as SHA-256. This algorithm uses a key value to perform the encryption. That key is your Secret Key. For that reason, your Secret Key must remain a shared secret between you and Amazon Payments.

Button click or other form request to Amazon Payments. Also inbound notification.

A notification that is sent whenever a payment, refund, or reserved payment completes successfully or fails. The caller must host this notification service and provide Amazon Payments with its URL.

An environment in which the caller charges a fee for facilitating a transaction between a sender and a recipient.

The steps through which an order passes between the time a customer selects an item and the customer's pay instrument is charged.

Response from Amazon Payments to your Amazon FPS application by way of Return URL or IPN.

The method of payment a customer chooses to use with Amazon Payments. These are credit cards, Amazon Payments account balance (ABT), and bank account debits (ACH)

An Amazon FPS payment processed with a single-use payment token. When the payment is made, the token may no longer be used.

A seller who receives a payment from a buyer (sender) in exchange for a service or product.

Payment token created when a seller authorizes a payment of marketplace fees to you for hosting services, often with a Register Now button.

An Amazon FPS payment processed with a recurring payment token. Payments are made periodically using the same payment token. The token is valid until it expires.

The amount that is put in reserve against a credit card but not charged.

Later, the transaction is settled (typically when the product is actually shipped).

A part of the Amazon Payments web service where you can test the functionality of your application without incurring charges or purchasing products.

A string distributed by AWS that uniquely identifies your AWS developer account.

The Secret Key is a shared secret between the developer and AWS. The Secret Key is used as the key in the HMAC algorithm that encrypts the signature.

The seller receives money from a buyer in exchange for a service or product.

The sender (also known as the buyer) pays a recipient for a product or service.

To complete a transaction that has been reserved.

If you don't charge the sender immediately upon the initiation of the purchase (and instead reserve the amount against the sender's credit card), you settle the transaction later, typically after you ship the product to the sender. Settle actually makes the reserved amount move from the sender to the recipient.

Secure Hash Algorithms used for Amazon Web Services signatures.

SHA1 is an earlier version of the algorithm, which is currently being deprecated for Amazon Web Services. SHA256 is its more secure replacement.

A URL-encoded string composed of request parameters and their values encrypted using an HMAC algorithm.

Signatures are used to authenticate and safeguard requests.

Payment token created when buyers authorize purchase on their own behalf, often with a Pay Now button.

Prior to calculating the HMAC signature, you first assemble the components for the signature in a sorted order, and then URL encode them. The pre-encrypted string is the string-to-sign.

A developer who uses Amazon Flexible Payments Service.