How to Build Integrations That Scale: Lessons From Teams Who've Been There

Integrations have become one of the biggest drivers of value in SaaS. Customers expect the products they use to connect seamlessly with the rest of their technology stack. Strong integrations improve adoption, strengthen partnerships, and increasingly influence buying decisions. ‍

But as integration ecosystems grow, teams quickly discover that scaling integrations involves much more than building connectors. Reliability, observability, maintenance, and operational processes all become increasingly important.

To explore what successful integration programs look like in practice, Pandium CEO and Co-Founder Cristina Flaschen and Pandium CTO Shon Urbas sat down with two product leaders who have spent years building and managing integration ecosystems:

• Venkat Iyer, VP of Product at Talkdesk
• Trevor Schueren, Product Manager at Workable

Together, they shared lessons learned from supporting integrations at scale and discussed the challenges, and opportunities, that come with growing an integration ecosystem.

Expect and Plan for Constant Change

Building the first integration usually feels straightforward because there is a clear customer request and a single partner tool to connect to. Then growth happens. One integration becomes five; five becomes twenty. Eventually, hundreds or thousands of customers rely on those connections every day.

At that point, the nature of the problem changes. As Talkdesk VP of Product Venkat Iyer explained:

“The most common challenge is underestimating the complexity of integrations as they scale. Integrations do come with unique challenges due to their dependency on external systems.”

Unlike regular features in your app, integrations depend entirely on systems built by other companies. Those external platforms will change their software without warning, update their security rules, or alter how their data is structured.

Design for Volatility

To keep your team from getting trapped in a never-ending cycle of emergency fixes, change how you plan your integrations:

• Assume things will change

Treat an integration as a living connection, not a one-time project. Expect the partner platform to update their system at least once a year, and allocate team time for routine maintenance.

• Protect the customer's data

Make sure your system is smart enough to handle glitches. For example, if a network delay causes the same data to be sent twice, the integration should recognize it so it doesn't accidentally create duplicate contacts, invoices, or tickets for your user.

Fight the Urge to Overbuild Early

One of the strongest themes throughout the conversation was that scaling doesn't require building everything upfront. In fact, experienced teams recommend the exact opposite: build iteratively based on real customer data.

Trevor Schueren from Workable encouraged teams to focus on understanding what customers actually need before introducing unnecessary technical complexity.

"What do people actually want through the integration? Does it need to be overly simple, or does it need to be complex?"

Sometimes customers need sophisticated, multi-directional workflows. Other times, a simple, one-way data synchronization solves the problem. Trying to predict every future requirement slows down delivery and creates unnecessary technical debt.

Venkat offered similar advice: "Start small, start simple." Successful teams solve the immediate problem, gather feedback, and expand capabilities based on real usage.

Planning for the "Unhappy Path"

Flexibility also applies to architecture. Because different partners, data models, and workflows require different approaches, the goal isn't to force every integration into the exact same mold. It’s to create systems that can adapt.

This means explicitly planning for when things go wrong. As Pandium CTO and Co-Founder Shon Urbas asked:

"What happens when it doesn't work great? How are we going to discover that? How are we going to rectify that?"

Partner outages, delayed webhooks, API changes, and network interruptions aren't unusual events – they’re normal parts of operating integrations at scale. Resilience isn't something you add later; it must be built into the core strategy.

Focus on Customer Transparency, Not Just Code

As an integration program matures, how you support customers matters just as much as how the code is written. Without clear visibility into how data is moving, integration issues will silently spiral into major customer support headaches.

Cristina Flaschen captured this dynamic directly:

“The only thing worse than not having an integration is having one that’s broken and silently failing.”

Silent failure erodes customer trust. A user might assume their systems are talking to each other, only to find out weeks later that important business data was never transferred.

Empower Your Support Team and Users

To maintain trust at scale, take the mystery out of integrations by putting information into the hands of the people who need it:

• Equip Your Support Team

Customer support agents shouldn't have to wait on an engineer to find out why a customer's integration isn't working. Give them an internal dashboard where they can see recent syncs and errors instantly.

• Notify the User Directly

If an integration stops working because a customer changed their password or revoked access, don't let it fail quietly. Pop up a clear message inside your app telling them exactly how to log back in and fix it themselves.

• Treat Integrations Like Real Product Features

Shon Urbas framed the solution simply: “We have to treat these integrations almost the same way you would treat a product feature.” Assign dedicated ownership to them. They need a roadmap, clear documentation, and long-term support… just like your core software.

Many teams initially think of integrations as one-off projects. However, successful organizations eventually realize they need to treat integrations as core products. This means investing heavily in the infrastructure and operational processes that support them.

Why Dedicated Integration Infrastructure Matters

As an integration ecosystem matures, many SaaS companies realize they've unintentionally started building their own internal integration platform. What started as a few simple connectors now requires:

• Deployment processes and CI/CD pipelines
• Centralized monitoring and logging
• Tenant visibility and credential management
• Retry logic and rate-limiting handles

None of these capabilities represent the core product features that customers actually buy your software for. However, they all become essential to protecting the customer experience.

This is where dedicated integration infrastructure makes a difference. Pandium helps SaaS companies manage growing integration ecosystems without forcing internal engineering teams to build and maintain all of that supporting infrastructure themselves.

Instead of managing integrations across multiple tools and fragmented solutions, teams can centralize operations, improve visibility, and provide support teams with the data they need to resolve issues faster. This gives engineering teams more time to focus on the core features that differentiate their products.

As Shon Urbas explained:

"People sometimes think of infrastructure and tooling around integrations as an afterthought. But in reality, it's your customer's primary way of interfacing with your systems."

The Connector Is Just the Beginning

Successful integrations create incredible business opportunities: more customers, stronger partnerships, and broader use cases. But growth naturally introduces complexity.

The organizations that scale successfully recognize that building the connector is only the first step. Long-term success comes from building the systems, processes, and infrastructure that allow integrations to continue delivering value as the ecosystem grows.

At scale, integration success depends on much more than the connector itself, it depends on everything supporting it.  If you’re serious about scaling and creating valuable partnerships with other SaaS products, schedule a time to talk with our team.

Related Content >> We asked SaaS buyers why integrations matter