Most companies don’t outgrow their product.
They outgrow their payment process.
At low volume, almost any payment gateway works.
At scale, weaknesses surface, failed authorizations, slow transaction processing, limited international payment support, rising payment gateway fees.
And those weaknesses compound quietly.
According to the Baymard Institute, the average documented online cart abandonment rate is 69.99%, with payment friction among the top causes.
That means your transaction process is not a back-office detail.
It directly impacts revenue.
A payment gateway is a technology that sits between your checkout and the broader payment processing system. It securely transmits card data, encrypts payment information, and sends data to the payment processor for authorization.
But here’s the truth:
The best payment gateway is not the one with the most features.
It’s the one that strengthens your transaction architecture.
If your gateway and payment processing decisions are made casually, you’ll eventually feel it in authorization rates, international payment failures, and recurring payment instability.
This guide to payment gateways reframes the conversation, from features to infrastructure.
Payment Gateway vs Payment Processor
Many teams confuse the difference between a payment gateway and a payment processor.
They’re not the same.
A payment gateway is the front door.
A payment processor is the network operator behind it.
Think of payment gateways as the secure bridge. They collect when customers enter their payment information, encrypt card data according to the Payment Card Industry Data Security Standard (PCI DSS), and send data to the payment processor.
The processor then communicates with card networks and banks to approve or decline the credit card payment.
Here’s how payment gateway work typically flows:
- Customer selects a payment method (credit and debit card payments, PayPal, etc.).
- Customers enter their payment details on a payment page.
- The payment gateway securely transmits data to the payment processor.
- The processor contacts issuing banks.
- Authorization returns.
- The customer completes their payment.
Simple on the surface.
Complex underneath.
Global ecommerce sales reached $5.8 trillion in 2023, and are projected to exceed $6.3 trillion in 2024.
As payment volume grows, even small inefficiencies in gateway and payment processing multiply.
That’s why selecting the right payment gateway is not just about accepting credit cards.
It’s about protecting the integrity of your broader payment processing platform.
7 Best Payment Gateways, Evaluated for Scale
Most “7 best payment gateways” lists rank providers by popularity.
We evaluate them by infrastructure strength.
Because the right payment gateway for your business depends on:
- International payment gateway support
- Recurring payment architecture
- API flexibility
- Fraud tooling
- Redundancy options
- Gateway and payment terminal integration
- Data portability
Here are seven widely used payment gateway options, assessed through a scaling lens:
1. Stripe
Best for: API-driven businesses and SaaS
Strengths:
- Developer-first design
- Strong recurring payment tools
- Broad international payment support
- Built-in payment gateway and merchant account options
Stripe powers millions of businesses globally and processed over $817 billion in payment volume in 2022.
Limitations:
- Can become expensive at high volume
- Customization may require engineering resources
2. PayPal
Best for: Brand trust and global reach
Strengths:
- Recognized consumer payment method
- Strong international payment gateway capabilities
- Multiple payment options
Limitations:
- Higher payment gateway fees
- Less control over the payment experience
3. Adyen
Best for: Enterprise and global retailers
Strengths:
- Unified commerce (online + payment terminal)
- Direct acquiring model
- Strong authorization optimization
Limitations:
- Enterprise-focused pricing
- Complex onboarding
4. Braintree
Best for: Marketplaces and subscription models
Strengths:
- PayPal ownership integration
- Recurring payment support
- Multiple payment methods
Limitations:
- Less customizable than Stripe
5. Checkout.com
Best for: High-growth ecommerce
Strengths:
- Strong global acquiring
- Flexible gateway service
- Optimized for international payment
Limitations:
- Enterprise-focused onboarding
6. Square
Best for: Omnichannel retail
Strengths:
- Gateway and a payment terminal ecosystem
- Simple setup
- Built-in payment services
Limitations:
- Limited customization for complex architectures
7. Authorize.Net
Best for: Traditional businesses moving online
Strengths:
- Long-standing gateway provider
- Stable hosted payment gateway options
- Strong compliance alignment
Limitations:
- Less modern API experience
What Most Teams Get Wrong About How Payment Gateway Work
Most comparisons stop at features.
Few explain how payment gateway work inside your broader payment architecture.
Here’s the overlooked issue:
Payment gateways typically sit between your checkout and your acquiring bank. They collect payment data, encrypt it, and the payment gateway sends it securely to the processor.
But not all gateways operate the same way.
There are different types of payment gateways:
- Hosted payment gateways: Gateways redirect customers to a third-party payment page. Easier to set up. Less control.
- Self-hosted payment gateways: You control the checkout, and the payment gateway collects and transmits payment data behind the scenes.
- API-based / integrated gateways: Fully embedded within your online payment processing flow.
Each model changes the payment experience.
Some gateways offer simplicity.
Others allow you to customize the payment experience deeply.
And that difference matters.
For example:
- Hosted models reduce compliance burden.
- Self-hosted payment gateways increase control but raise security responsibility.
- API-first gateways allow advanced orchestration across payment service providers.
When evaluating the difference between a payment gateway and a gateway and a payment processor, you’re really evaluating how much control you want over the transaction process.
The right payment gateway for your business depends on:
- Your international payment needs
- Your fraud exposure
- Your subscription logic
- Your redundancy strategy
- Your merchant account and a payment setup
If you’re scaling globally, you may need an international payment gateway that optimizes authorization rates locally. If you’re omnichannel, you’ll care about gateway and a payment terminal integration.
This is why selecting the right payment isn’t about brand recognition.
It’s about architecture alignment.
Designing a Scalable Payment Process
The best payment gateway is rarely a single gateway.
As companies grow, payment gateways and payment processors often become part of a broader payment processing strategy.
Instead of asking, “Do we need a payment gateway?” the better question is:
“How should our gateway and payment infrastructure evolve?”
Modern payment gateways facilitate online transactions, but they can also:
- Route transactions dynamically
- Fail over between payment service providers
- Support various payment methods
- Optimize for international payment performance
- Reduce false declines
- Improve secure payment handling
In high-growth environments, many teams adopt:
- Multi-gateway setups
- Regional payment service providers
- Orchestration layers
- Redundancy systems
Why?
Because online payment reliability directly affects revenue.
Payment gateways act as critical infrastructure. If one gateway provider experiences downtime, your entire payment process stalls.
That’s not a checkout problem.
That’s a systems problem.
When you choose a payment gateway, consider:
- How easily you can migrate
- How payment gateway fees scale with volume
- Whether the payment gateway allows multi-entity expansion
- How payment gateways use data to the payment gateway for optimization
- How well it integrates into your broader online payment gateway stack
The goal isn’t just to set up a payment gateway.
It’s to design a resilient transaction process that grows with you.
Because at scale, gateway and payment decisions stop being operational.
They become strategic.
And that’s where the real competitive advantage lives.
When Should You Switch or Reevaluate Your Payment Gateway?
Most teams don’t revisit their payment gateway until something breaks.
A spike in failed transactions.
An expansion into international payment markets.
Unexpected payment gateway fees at scale.
By then, the migration is reactive.
Instead, treat your gateway and payment infrastructure like any other core system. Review it regularly.
You likely need to reassess your payment gateway for your business if:
- Authorization rates are declining
- You’re entering new regions and need an international payment gateway
- Your current payment gateway provider limits customization
- Your payment terminal and online systems don’t align
- You’ve outgrown your original merchant account and a payment setup
- You need support for new payment services or multiple payment service providers
The difference between a payment gateway and a gateway and a payment processor becomes more important as complexity grows.
Some payment gateway options work well early on.
Fewer remain the right payment gateway at scale.
Selecting the right payment is less about brand loyalty and more about long-term flexibility.
Because a payment gateway is a tool, but at scale, it becomes leverage.
So, What’s the Best Payment Gateway for You?
There is no universal best payment gateway.
There is only the right payment gateway for your transaction process, risk profile, geography, and growth plans.
This guide to payment gateways isn’t about ranking logos.
It’s about helping you learn how payment gateways actually serve your infrastructure, how a gateway is a payment gateway in theory, but part of a broader system in practice.
If your payment gateway service feels like a plug-and-play feature rather than a strategic asset, it may be time to rethink it.
That’s where Lerpal can help.
We work with growing teams to evaluate payment gateway and payment architecture decisions calmly and systematically. From selecting the right payment gateway to redesigning your broader payment process, we focus on structure, scalability, and resilience, not hype.
If you’re questioning whether your current gateway and payment setup can support the next stage of growth, let’s talk.
The right decision now can prevent expensive friction later.
FAQ
A payment gateway is a technology that securely transmits payment data between your checkout and the broader transaction process. It encrypts customer information and connects your system to banks through a payment processor. While it may look simple on the surface, the payment gateway serves as a critical control point in your overall payment architecture.
The difference between a payment gateway and a payment processor lies in their roles. The gateway collects and encrypts customer payment details, while the processor communicates with banks to approve or decline transactions. Payment gateways and payment processors work together, but they solve different parts of the payment process.
There are three common types of payment gateways: hosted gateways (redirect customers to a third-party page), self-hosted gateways (process payments within your environment), and API-based gateways (fully integrated). Each option changes how much control you have over the payment experience and your technical responsibility.
To choose a payment gateway, evaluate your transaction volume, international payment needs, integration complexity, and payment gateway fees. The right payment gateway depends on your growth stage and infrastructure, not just popularity.
Yes. Even when working with payment service providers, a payment gateway is required to securely handle payment data. Some providers bundle gateway and payment processing together, but understanding how payment gateway and payment systems interact helps you make better long-term decisions.
