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Rather than hiding their product behind NDAs, PolyAPI published detailed demos and documentation early. Darko explained, "We think that our domain and our product set is just so hard to copy and replicate... so we were never worried about competitors catching wind of what we're doing." This transparency helped enterprise buyers see that PolyAPI wasn't vaporware.
PolyAPI succeeded by focusing on enterprises that had already rejected low-code platforms and were building in-house solutions. This created a clear target market of sophisticated buyers who understood the limitations of existing solutions and were willing to adopt a new approach.
Instead of broad marketing campaigns, PolyAPI began with individual conversations to gather feedback, find alpha testers, and evolve into beta testing. This grassroots approach helped them refine their product and messaging before scaling up marketing efforts.
Out of 20 initial VC conversations, 19 passed, but Ross Mason (Mulesoft founder) immediately invested. Darko noted, "That kind of signal is really important because the one person who deeply understands the space was super excited to invest." This validated their approach and provided valuable strategic guidance.
Even six months after their latest round, PolyAPI is already preparing for Series A by maintaining relationships with 20+ VCs and working toward clear metrics. This ongoing engagement creates leverage for future fundraising by demonstrating consistent progress.
From Consulting Chaos to API Infrastructure: How PolyAPI Cracked Enterprise Integration
The breaking point came during a consulting project that should have been straightforward. Darko Vukovic and his co-founder were building software for a client when they hit a wall that every enterprise developer knows too well: the systems wouldn’t talk to each other. “We were doing a consulting project and we had to integrate with a bunch of systems that our customer was using,” Darko recalls. “And it was really difficult, really expensive, really time consuming.”
That frustration became the genesis of PolyAPI, a platform that’s now raised $22 million to solve what Darko calls “the lingua franca problem” of enterprise software. In a recent episode of Category Visionaries, Darko Vukovic, CEO and Founder of PolyAPI, walked through the tactical decisions that took his company from consulting side project to venture-backed infrastructure play.
The Consulting Project That Wouldn’t Die
The original pain point was visceral. Darko and his team were trying to connect multiple enterprise systems for a client, and what should have taken weeks stretched into months. “We ended up building this internal tool to make that work smoother, work better, work faster,” he explains. That internal tool caught the attention of other consulting clients who faced identical integration nightmares.
The pivot point came when Darko realized they were solving the same problem repeatedly. “We kind of said, you know what, let’s take a step back. This problem of integrating lots of systems together, this is a category in and of itself. Why don’t we just focus on this?” Rather than continue taking consulting revenue, they made the harder choice: build a product that could scale beyond their billable hours.
Selling Infrastructure Before It’s Cool
PolyAPI’s early GTM strategy required convincing enterprises to adopt infrastructure that didn’t yet have a defined category. Darko’s approach was decidedly unglamorous: “We did a lot of cold outreach, a lot of cold emails, a lot of cold calls.” But the specificity of their targeting made the difference. They focused on VP and C-level executives at companies with 200-2000 employees who were already spending heavily on integration tools.
The key insight was understanding their buyer’s existing pain. “If you are spending this much money on integration tools, you probably have a very deep integration problem,” Darko notes. They weren’t selling to companies that might have an integration problem someday—they targeted organizations already bleeding budget on duct-tape solutions.
Their message resonated because it addressed a hidden cost that most executives didn’t fully appreciate. “Companies spend 30 to 40% of their engineering time doing integrations,” Darko explains. “That means if you have 100 engineers, you have 30 to 40 engineers that are just doing integration work.” When he framed it that way—as reclaiming nearly half an engineering organization—the value proposition became impossible to ignore.
The Technical Moat Nobody Talks About
What separates PolyAPI from the crowded integration space isn’t just what it does, but how it’s architected. Darko is adamant about this distinction: “We are not an iPaaS. We are an API management platform.” The difference matters enormously for how enterprises actually deploy the solution.
Traditional integration platforms require companies to move their data through third-party infrastructure. PolyAPI takes the opposite approach. “We actually sit in your infrastructure,” Darko explains. “So PolyAPI, you can run it on-prem, you can run it in your own AWS account, you can run it in your own Google Cloud account, Azure account, whatever you want.”
This architectural decision opened doors with security-conscious enterprises that would never consider cloud-based integration platforms. Banks, healthcare companies, and government contractors—organizations with strict data residency requirements—could finally get modern API infrastructure without compromising their security posture.
The AI Timing Nobody Planned
Like many infrastructure companies, PolyAPI found itself accidentally positioned for the AI wave. “AI kind of came out of left field and took over the world,” Darko admits. But the timing proved fortuitous. As companies rushed to deploy AI agents and copilots, they discovered a fundamental problem: their AI needed to take actions, not just generate text.
“If your company uses Salesforce, HubSpot, NetSuite, whatever, your AI needs to talk to all these systems to be able to do work on your behalf,” Darko explains. Suddenly, the API infrastructure PolyAPI had been building became critical for AI deployment. “We very quickly realized, oh, this thing that we’ve been building for four and a half years is actually very useful for AI.”
The shift required zero product changes but demanded a complete messaging overhaul. Their homepage, their pitch decks, their sales conversations—everything got reframed around AI enablement. “We realized that the best way to think about PolyAPI is to serve as the connection layer between your AI and the rest of your business,” Darko says.
Building Category Before Building Features
Perhaps the most counterintuitive aspect of PolyAPI’s strategy is Darko’s focus on category creation over feature velocity. While competitors race to add integrations and capabilities, PolyAPI invests heavily in thought leadership and market education.
“You need to be seen as a thought leader in your space,” Darko argues. “You need to be putting out useful content that is going to resonate with your ICP.” For PolyAPI, that means producing content about API management, integration challenges, and AI infrastructure—topics that establish expertise rather than push product.
The approach requires patience. Category creation doesn’t generate immediate pipeline. But Darko sees it as the only sustainable path in infrastructure. “When you are creating a new category and people don’t really know about your category, you have to do a lot of education,” he explains. That education builds trust that transactional marketing never could.
The Long Game on Infrastructure
Darko’s vision for PolyAPI extends far beyond fixing integration headaches. He sees the company becoming fundamental infrastructure for how enterprises operate in an AI-native world. “Every company is going to have lots of AI agents,” he predicts. “Those AI agents are going to need to interact with your business systems.”
The wedge is integration. The endgame is becoming the standard layer between AI and enterprise software. It’s an ambitious goal that requires both technical excellence and category patience—exactly the combination PolyAPI has been building since that frustrating consulting project years ago.