What a payment gateway does
When a customer pays, the gateway encrypts the payment details, sends them for authorization, returns the result and records the transaction. It also stores payment methods securely for future use, so customers can pay with a saved card or bank account without typing it in again, whether they are buying online, paying at a counter or settling an invoice. Behind that single moment sit routing, fraud checks, retries, settlement instructions and reconciliation data, all handled so your team does not have to.
How a payment gateway works
- 1Capture. The customer enters or taps a card or bank details in your checkout, app or terminal.
- 2Encrypt and route. The gateway encrypts the details and routes the authorization request to the right network for the card type.
- 3Authorize. The issuing bank checks funds and fraud signals, then approves or declines the charge.
- 4Respond. The gateway returns the result to your checkout in real time so the customer sees it immediately.
- 5Settle and reconcile. Approved transactions are batched for settlement and recorded for reporting, so funds reach the business and your books stay in order.
Tokenization works alongside this flow: the first charge returns a secure token that replaces the card number, so future charges, recurring billing and saved methods reuse the token instead of the sensitive data.
Tokenization and hosted payment fields
Card numbers are sensitive, and the more places they travel, the more you have to protect. Tokenization replaces a card number with a secure token that is useless to anyone who steals it. Hosted payment fields let customers enter card details in a secure form displayed inside your page but served by us, so the card data never touches your systems. Together they make checkout smoother and reduce the amount of payment security work your team carries.
One gateway across every channel
Online and in person. Accept card-not-present payments on your website or app and card-present payments at a terminal, all through the same gateway.
Recurring and one-time. Handle a single purchase and a recurring subscription on the same platform, with saved payment methods that keep repeat customers coming back.
Cards and bank payments. Let customers pay the way they want, with cards and ACH supported side by side.
Unified reporting. See every transaction across every channel in one place, so reconciliation does not become a separate job for each way you take payments.
Gateway or processor: what is the difference?
| Payment gateway | Payment processor | |
|---|---|---|
| Role | Routes and secures the transaction from your checkout | Settles funds with the card networks and your bank |
| Customer-facing | Often, through hosted fields and checkout | Usually behind the scenes |
| Handles card data | Yes, with tokenization and hosted fields | Yes, as part of settlement |
| In a typical setup | You work with it directly | You rarely interact with it directly |
In practice the two work together as one movement, which is why working with a partner that handles both keeps your reporting and support in one place.
Security and PCI scope
How you integrate shapes both the checkout experience and your security burden. Hosted payment fields and tokenization keep raw card numbers off your servers, which keeps your PCI scope narrow and your audits shorter. The token, not the card, is what gets stored and reused for future charges. Encryption protects data in transit, and monitoring helps catch suspicious patterns before they grow. We help you choose the integration shape that protects your customers and your team at the same time.
What to look for in a gateway
- Tokenization and hosted fields so card data never lives on your systems.
- Support for card-present and card-not-present payments in one place.
- Recurring billing and saved payment methods for memberships and subscriptions.
- ACH alongside cards so customers can pay from a bank account.
- Unified reporting across every channel and payment type.
- Developer documentation and a team that answers when you have a question.
Built to work with linq
Our gateway works with linq, so if you are a software company embedding payments, the pieces fit together: merchant onboarding, underwriting, card and ACH processing, and reporting. If you are a traditional merchant, the same gateway powers your storefront, your website and your back office without stitching together several vendors.
How Merchant Focus helps
We have helped businesses accept payments since 2004. Whether you are a single merchant setting up your first online store or a software platform embedding payments for thousands of customers, we start by understanding how you actually take payments, then recommend the integration that fits. We do not push a one-size shape, and if a simpler path is better for you, we will say so. Developer documentation is available at merchantfocus.docs.paymentsonline.io, and our team is here to answer questions before, during and after launch.