DIY Payment Infrastructure: Is It Still the Right Choice for Your Business?

For years, many payment service providers (PSPs) and acquirers have viewed managing payment infrastructure internally as the default approach. A DIY payment approach was assumed to mean greater ownership, greater control, greater flexibility and lower long-term cost. 

There is good reason why this model became the default. Internal teams know the business, understand operational priorities and can tailor systems to meet specific requirements. Building and managing payment infrastructure internally can, therefore, appear to offer greater flexibility while reducing dependence on external providers. 

But the payments landscape has changed significantly. Payment methods have multiplied, merchants increasingly operate across multiple markets and channels, regulatory expectations continue to evolve, and customers expect every transaction to be fast, secure and seamless. 

Therefore, the question is not whether an organization can manage its payment infrastructure internally but whether doing so remains the best use of its people, investment and expertise. 

Why businesses choose a DIY payment approach 

For many organizations, the strongest argument in favor of DIY payment infrastructure is control. Owning the infrastructure can provide greater visibility over how systems are designed and managed, while giving internal teams direct responsibility for decisions about connectivity, integrations and ongoing development. For organizations with sufficient expertise and resources, those advantages can remain compelling. 

Cost is also another consideration. When business finance leaders compare DIY payment infrastructure with a managed service provider (MSP), the starting point is often straightforward. Internal staff and technology costs sit on one side and service fees on the other. On that basis, the DIY model can appear competitive. However, that comparison does not necessarily capture the full operational commitment involved. 

Payment infrastructure is an ongoing investment. Internal teams do not simply build technology and maintain it. They may actively manage vendor and carrier relationships across multiple providers, handle protocol integrations, maintain compliance programs, recruit and retain specialist expertise, monitor connectivity, respond to incidents and coordinate certification cycles, all while simultaneously supporting the core business. 

Each of those responsibilities carries a cost and together, they can create a structural overhead that can grow alongside the complexity of the payment environment. 

The risks and resource demands of managing payments in-house 

As payment infrastructure becomes more complex, the consequences of getting it wrong can become more significant. Research from TNS found that 43% of consumers experienced issues at checkout in the past 12 months. These friction points can range from outages and unaccepted payment methods to unnecessarily complex transaction journeys. For PSPs and acquirers, disruption at checkout can affect transaction volumes, merchant retention, customer satisfaction and revenue growth. 

Compliance adds another layer of responsibility. Of the 64 new requirements introduced under Payment Card Industry Data Security Standard (PCI DSS) v4.x, 51 became effective on March 31, 2025. These requirements cover areas including authentication, payment-page script monitoring and continuous approaches to security testing. 

For internal teams already stretched across multiple operational priorities, absorbing those requirements represents an additional commitment of time, expertise and resources. The financial consequences of falling short can also be material. Non-compliance can lead to penalties, increased transaction costs, remediation expenses and, in serious cases, restrictions on the ability to process card payments. 

Security exposure is a related consideration as IBM’s 2025 Cost of a Data Breach Report puts the global average cost of a breach at $4.44 million, with US organizations facing an average of $10.22 million. Those figures encompass direct costs, regulatory penalties, operational disruption and customer attrition. 

For payment organizations, the reputational dimension compounds the financial one. A breach that exposes cardholder data does not just create a legal liability but can also create a trust deficit with the merchants and consumers the business depends on. 

These are among the risks of DIY payment integrations that may be less visible in an initial business case. Infrastructure renewal cycles, specialist recruitment and retention, vendor contract management, monitoring and the coordination of incident response across multiple provider relationships all represent genuine operational commitments. Individually, each may appear manageable but collectively, they can materially change the economics of managing payment infrastructure internally. 

How growing complexity affects long-term scalability 

The challenge becomes particularly important as a payment business grows. Expansion into new geographies, processors and payment methods can introduce additional vendor relationships, technical requirements and operational dependencies. As a result, the internal overhead associated with DIY payment processing can scale alongside the business. 

What might have begun as a manageable internal model can, therefore, become progressively more resource intensive. A decision made when an organization operated in fewer markets, supported fewer payment methods or handled lower transaction volumes should not automatically dictate how its infrastructure is managed several years later. 

There is also a less visible cost: opportunity cost. Every hour an internal team spends managing infrastructure, whether navigating certification cycles, responding to connectivity issues or coordinating vendor relationships, is an hour not being spent on product development, merchant acquisition or customer experience. For organizations where growth is a strategic priority, that reallocation of resource has a real commercial value, even if it is one that is difficult to quantify on a spreadsheet.  

That trade-off matters because specialist expertise is finite. An organization may have the technical capability to manage payment infrastructure successfully, but capability alone does not determine the most valuable deployment of that expertise. 

When evaluating a DIY payment method or infrastructure approach, organizations also need to consider whether the model can evolve alongside the business. Requirements change as businesses grow. The model that offered the right balance of control, cost and flexibility at one stage of development can also quietly become a constraint at another. 

Ownership itself should not be confused with control over outcomes. When payment connectivity fails, merchants are unlikely to be concerned with whether the issue originated with an internal system, a carrier or another external dependency. They expect their PSP or acquirer to resolve the problem quickly and minimize disruption. The more useful question is whether an organization has the expertise, operational capacity and ongoing investment required to deliver the resilience, responsiveness and scalability its customers expect. 

Evaluating DIY payment infrastructure versus managed services 

None of this means managing payment infrastructure in-house is the wrong choice for every organization. Some businesses have the scale, expertise and resources to do it successfully and internal ownership may continue to support their strategic objectives. 

The decision should be viewed as an ongoing evaluation of where investment, expertise and management attention generate the greatest return. 

For organizations reviewing DIY payment infrastructure against a managed service approach, five questions can help frame that assessment: 

• Do we have the expertise, capacity and long-term investment to support payment infrastructure as our business grows? 

• Can we provide continuous monitoring and rapid incident response across every market we serve? 

• Are we equipped to keep pace with evolving compliance and regulatory requirements? 

• Can we expand into new markets without significantly increasing operational complexity? 

• Is managing payment infrastructure a genuine strategic differentiator for our business, or simply something that needs to work exceptionally well? 

The answers will differ according to each organization’s circumstances. For some, they will continue to support a DIY approach. For others, they may prompt a reassessment of where internal expertise creates the greatest value. 

Comparing DIY and managed service models* 

*Outcomes depend on each organization’s circumstances. 

Ultimately, the important consideration is whether the total commitment involved, including compliance, monitoring, incident response, vendor management, certification, security and the opportunity cost of internal resources, continues to make DIY payment infrastructure the right choice as the business evolves. 

As payment ecosystems become increasingly interconnected, regulated and mission-critical, regularly reassessing that decision can help ensure infrastructure remains an enabler of growth.