Key Takeaways
- Payment gateway infrastructure is the technology that moves payment data between customers, merchants, processors, and banks to authorize and complete transactions.
- Infrastructure decisions determine how payment data flows through an organization, which affects transaction performance, security, and compliance.
- The more systems that store, process, or transmit cardholder data, the larger the cardholder data environment (CDE) and PCI scope become.
- Encrypting and tokenizing payment data helps keep sensitive information out of merchant systems to reduce exposure and simplify compliance efforts.
- Security-first architectures that limit where payment data exists can help organizations reduce risk and PCI scope while supporting omnichannel payments.
The most secure payment data is payment data your systems never have to handle. Whether that data enters your environment in the first place is largely determined by your payment gateway infrastructure, which makes this technology one of the most important factors for payment processing, security, and compliance.
What Is Payment Gateway Infrastructure?
Payment gateway infrastructure is the technology that moves payment data between customers, merchants, payment processors, and banks during a transaction.
Core Components of Payment Gateway Infrastructure
Payment transactions require multiple connected components working together, along with security technologies such as encryption and tokenization that protect payment data as it moves between them.
- Payment gateway: The software and connectivity layer that captures a customer’s payment information and sends it for processing. Examples include online checkout forms, iFrames, hosted payment pages, and in-store card readers.
- Payment processor: The technology that receives transaction information from the gateway and routes it to the appropriate card network and financial institutions.
- Acquiring bank: The financial institution that processes payments on behalf of the merchant and deposits funds into the merchant’s account once a transaction is approved and settled.
- Issuing bank: The customer’s financial institution that approves or declines the transaction after checking available funds or credit and evaluating risk factors.
- Card networks: The payment networks – such as Visa and Mastercard – that allow issuing and acquiring banks to communicate and provide the rules, standards, and infrastructure used to protect card transactions.
Why Infrastructure Matters
Decisions about payment gateway infrastructure determine how payment data flows, and that path influences everything from transaction speed to security to compliance burden.
How Payment Gateway Infrastructure Works
Here’s a step-by-step look at the payment process:
- The customer submits payment details through an online page, app, in-store card reader, or other payment gateway.
- The payment gateway encrypts and transmits data for processing.
- The payment processor routes the transaction to the appropriate card network to the issuing bank.
- The issuing bank approves or declines the transaction.
- The bank’s response is returned to the merchant through the network, processor, and gateway.
- If approved, funds are transferred through the acquiring bank and deposited into the merchant’s account according to the settlement schedule.
Payment Gateway Infrastructure and Security
Because payment transactions involve sensitive information – including primary account numbers (PANs) and personally identifiable information (PII) – payment infrastructure design that minimizes exposure to payment data can help reduce risk, while poorly designed systems can create additional exposure points.
Where Risk Exists in Gateway Infrastructure
Sensitive payment data can be exposed as it enters internal systems, moves between systems or third-party integrations, or gets stored for future use.
How Payment Gateway Infrastructure Impacts PCI Scope
Payment infrastructure determines the size of the cardholder data environment (CDE), which consists of the systems, networks, and processes that touch cardholder data. The bigger the CDE, the greater the PCI scope – the portion of the organization that must meet Payment Card Industry (PCI) compliance requirements.
What Expands PCI Scope
Any system that touches raw cardholder data – whether the merchant system capturing it, the applications and networks transmitting it, or the databases storing it – can expand PCI scope. Choosing a payment gateway that prevents raw cardholder data from entering systems can reduce PCI scope.
Common Challenges in Payment Gateway Infrastructure
Performance and Latency Issues
Delays in the transaction path – typically caused by inefficient routing – can slow authorization and lower sales conversion rates.
Scalability Across Channels
As organizations grow, infrastructure must be able to support increasing transaction volumes for multiple channels such as in-store, mobile, web, and call center.
Security and Compliance Complexity
Poorly designed infrastructure can increase both security risk and PCI scope. Encryption and tokenization can help reduce exposure, but organizations must choose solutions designed to minimize the CDE.
Integration with Legacy Systems
Older systems that weren’t designed for modern security requirements can increase risk and be difficult to bring up to date.
Types of Payment Gateway Infrastructure
Different payment gateway architectures offer different tradeoffs in customer experience, integration flexibility, and PCI compliance requirements.
Hosted Gateways
Hosted gateways redirect customers to a payment provider’s page to enter payment information. This architecture typically gives merchants less control over the customer experience, but can reduce PCI scope by keeping sensitive data outside the merchant environment.
Integrated Gateways
Integrated gateways embed payment functionality directly into a merchant’s website or business system. This approach provides greater control over the user experience but may increase PCI scope if payment data enters the merchant environment.
API-Based / Modern Gateways
Modern gateway platforms often use APIs to support flexible omnichannel payments. Merchants typically have the flexibility to implement security technologies that best fit their environment and allow them to scale.
Modern Payment Gateway Infrastructure Best Practices
Encrypt Data at the Point of Interaction
Prevent raw data from entering systems and reduce exposure early by encrypting data as soon as it’s captured. PCI-validated point-to-point encryption (P2PE) protects cardholder data from the point of interaction and reduces PCI scope.
Use Tokenization for Stored Payment Data
Tokenization replaces sensitive payment data, such as a primary account number (PAN), with a unique substitute – or token – that has no meaningful value if intercepted. This supports recurring payments and omnichannel experiences without storing raw cardholder data.
Minimize System Connectivity
The fewer systems that interact with sensitive payment data, the smaller the potential attack surface. By encrypting and tokenizing data, organizations can limit where cardholder data exists and reduce compliance burden.
Design for Scalability and Resilience
Choose infrastructure that can support peak transaction volumes without compromising uptime and reliability. A payment orchestration layer can help organizations maintain consistent security policies and payment workflows across channels, even when working with multiple processors or payment partners.
Organizations should also consider how easily and flexibly infrastructure integrates existing systems. Opt for architectures that are not vendor-specific to simplify migrations or change services as business requirements evolve.
Payment Gateway Infrastructure for Omnichannel Payments
Keeping payment gateway infrastructure unified and centralized across channels helps create a consistent customer experience and apply the same security controls across channels.
Unified Payment Flows Across Channels
A unified payment infrastructure helps ensure data is processed the same way regardless of where the transaction occurs.
Centralized Payment Management
Managing payments through a centralized gateway or platform can help organizations apply consistent security controls and payment workflows across channels.
Why Consistency Matters
Consistent workflows across channels improve operational efficiency and help prevent security gaps.
How Payment Gateway Infrastructure Is Evolving
Payment gateway infrastructure continues to adapt as organizations add more channels and manage growing security and compliance requirements.
API-Driven and Cloud-Native Gateways
Modern payment gateways often rely on APIs and cloud-based infrastructure that provide greater flexibility to deploy, integrate, and scale payment systems.
AI and Smart Routing
More organizations are incorporating intelligent routing technologies that optimize transaction processing to improve authorization rates and support fraud prevention.
Increased Focus on Security Architecture
As organizations place greater emphasis on security, technologies such as encryption and tokenization are becoming common components of modern payment infrastructure.
How Bluefin Secures Payment Gateway Infrastructure
Bluefin’s approach to payment gateway infrastructure reduces exposure to sensitive payment data to keep information protected and simplify compliance across channels.
Encrypt Payment Data Before It Enters Systems
Bluefin’s PCI-validated P2PE encrypts payment data at the point of interaction, before it ever enters merchant systems.
Tokenization Across Payment Workflows
Bluefin’s vaultless tokenization replaces sensitive payment data with tokens that can be used throughout the payment lifecycle to support recurring payments and other payment workflows.
Reduce PCI Scope Through Architecture
Because Bluefin’s architecture limits where payment data exists, organizations can reduce risk and simplify PCI compliance efforts from the beginning of transactions instead of relying solely on downstream security controls.
Support Omnichannel Payment Security
Bluefin helps organizations apply consistent security controls across channels to provide unified customer experiences and payment operations.
Secures Payment Gateway Infrastructure with Bluefin
Far more than a simple connection between systems, payment gateway infrastructure serves as the foundation of payment performance, security, and compliance.
Your payment infrastructure shouldn’t increase risk. Contact Bluefin to secure payment data and simplify PCI compliance.
Payment Gateway Infrastructure FAQs
How does a payment gateway differ from a processor?
A payment gateway captures and transmits payment information, while a payment processor routes the transaction through the payment ecosystem.
How does infrastructure affect PCI scope?
Payment infrastructure determines how many systems interact with raw payment data. More systems increase the cardholder data environment (CDE) and PCI scope.
What makes a payment gateway secure?
A secure payment gateway protects payment data at every stage of the transaction by reducing where this data exists and how many systems can access it.
What is the best payment gateway architecture?
The best payment gateway architecture reliably and efficiently supports payment processing while minimizing exposure to sensitive payment data, supporting a consistent customer experience, and providing the flexibility to scale.
