a16z Podcast – How Kong Was Born: APIs, Hustle, and the Future of AI Infrastructure

Date: October 21, 2025
Host: Andreessen Horowitz (Martin Casado, General Partner)
Guest: Augusto “Aggie” Marietti, CEO and Co-founder of Kong

Episode Overview

In this episode, Martin Casado sits down with Aggie Marietti to unravel the extraordinary founding journey of Kong, a leading API infrastructure company. The conversation traces Marietti's path from sleeping on air mattresses in San Francisco to the near-death experiences and pivots that defined Kong’s trajectory. The pair dive deep into the grind of startup survival, the evolution and growing significance of APIs, and how the next era of AI will make API infrastructure even more essential.

Key Discussion Points & Insights

From Milan Garage to San Francisco Survival

• Origin Story and Immigration Challenges

  • Marietti recounts arriving in the US with only $600, no social security number, and a 90-day window to make it as entrepreneurs.
  • Survived early days by sleeping on couches/closets, living off $1,000/month for three founders, and relying on "rice, beans, tuna, and pasta."
  • Quote:
    “He opens a closet and there's like all the bananas falling off because there was one guy's only eating huge bananas. He opened another closet, there's another mattress with other guys sleeping in a second closet. And say, okay, this is real. We had no money.”
    — Aggie Marietti [00:00]

• Fundraising Hustle

  • Creative tactics included stealing attendee lists at Stanford's Entrepreneurship Week to cold-email 400+ people.
  • First meaningful check: $17,000 from a YouTube founding team member—negotiated at Travis Kalanick’s house, with Kalanick forcibly keeping investors from leaving so Marietti could negotiate a better deal.
  • Quote:
    “Travis brought me to the bathroom, locked the door of the house so these guys don't leave ... at the end, we handshake on the deal.”
    — Aggie Marietti [05:05]

• Living on the Margin

  • Survival involved sharing a single mattress, "hacker" living, and being continuously under threat of running out of money.
  • Early employees had to believe in a team of “illegal Italians” who could disappear any day.

Pivots and Reinventions: Marketplace to API Gateway

• First Startup Vision Misses Mark

  • Initial product: an API-based drag-and-drop app builder—too early for the market.
  • Pivoted to building an API marketplace but struggled with scale, monetization, and quality control.
  • Lessons Learned:
    • Successful marketplaces require a broad, low-power long tail and strong supply-side exclusivity. APIs lacked both.

• Foundation for Kong

  • Developed an internal API engine ("API Gateway") to support their marketplace.
  • Realized every company would need such infrastructural glue—thus, pivoted the technology into what became Kong, open-sourcing it in 2015.
  • Quote:
    “We built this massive API engine behind the marketplace ... wait a second, every company will become an API company. Why we don't take this engine and we give it to the whole world? And that was the beginning of open source Kong.”
    — Aggie Marietti [18:38]

Scaling, Survival, and Breakout

• Constant Struggle until Breakout

  • Multiple near-death experiences, requiring bridges and last-minute funding to survive.
  • The launch and open-sourcing of Kong quickly distinguished it from 40+ competitors due to strong product-market fit and surge in viral adoption.
  • Notable investors included Jeff Bezos and Eric Schmidt, whose involvement lent further legitimacy.

• Scaling Up & Recognition

  • Kong experienced explosive growth after open-sourcing, reaching nine-figure ARR and hiring rapidly.
  • Symbolism: Each year, the “Founders Award”—2,555 stock options—is awarded to commemorate the 2,555 days (~7 years) of struggle before success.
  • Quote:
    “The founders award is 2,555 stock to the best employee of the company. It's just symbolic ... to remember seven years of struggle every year.”
    — Aggie Marietti [00:35] [25:59]

• Personal Stakes

  • Marietti describes a refusal to quit, tied emotionally to not wanting to return home to Italy in defeat.
  • Quote:
    “I could never visualize myself going back to the airport in Italy and my dad picking him up and say how's it going? ... I would have died here without food. Like I cannot do that.”
    — Aggie Marietti [35:29]

Kong’s Position: The Backbone of Modern Software

• Kong Explained

  • Kong is an API infrastructure company providing the “highways” that let microservices and APIs—internal and external—run, scale, and remain secure.
  • Offers enterprise-grade API management, security, traffic control, and more.
  • Analogy:
    “If APIs were cars, you got guardrails, speed bumps, speed cameras, gas stations … we provide all the infrastructure to make sure API connectivity runs.”
    — Aggie Marietti [23:58]

• Breaking Away from Competitors

  • Rapid growth after years of struggle—outlasted and out-scaled over 40 competitors as the market consolidated due to key acquisitions (Mulesoft, Apigee).

API Infrastructure and the AI Wave

• How AI Supercharges API Importance

  • Agents (AI models) will increasingly interact programmatically using APIs—not GUIs—making robust API infrastructure core to the next generation of software.

  • The rise of AI brings new “boring” but critical problems, like API authentication, key management, and rate-limiting for models and agents.

  • Quote:
    “Agents are going to consume Internet in a very different way than how human did... Machine consuming Internet, it's through programming interface. That's the huge shift that we are now capturing and powering ... at the end of the day, behind the scene it's all APIs.”
    — Aggie Marietti [27:27]

• Infrastructure is the True Enabler

  • Kong aims to become not just an API Gateway, but a unified platform for classic API, LLM, and agent connectivity—supporting token-based economics and machine-to-machine communication.
  • The shift is likened to the microservices boom: first, each framework re-implements core logic, then abstraction via a gateway pattern wins out. The same is emerging with AI agents and LLMs.
  • Quote:
    “I think you cannot do AI if you're not API first ... what we are calling or building is a unified API and AI connectivity platform that helps you navigate this transition ... I think it will all converge into a unified broker.”
    — Aggie Marietti [30:39]

Startup Lessons and Philosophy

• Startups: Survival and Grit

  • Everything takes much longer than you expect: “It always takes longer than what we think.” [35:52]

  • Play the long trend; avoid chasing short-lived fads.

  • Keep burn low. “Don’t die. Don’t quit.” [36:34]

  • Quote:
    “It always take longer than what we thinks. It's good to take a Trend the last 10 years, 20 years because you have time to grow into and do a lot of mistakes ... you have to generally believe it in this trend versus falling glitters ... as a leader, as a human, as a market, as a product, as a revenue, it's always going to take longer. So take something that lasts and just put 110% on it every day and then it will compound. Keep the bar rate low in the early days.”
    — Aggie Marietti [35:52]

Memorable Quotes and Moments (with Timestamps)

• San Francisco survival and first investor stories:
  “Travis brought me to the bathroom, locked the door of the house so these guys don't leave ... at the end, we handshake on the deal.” [05:05]

• API marketplace to Kong pivot:
  “We built this massive API engine ... wait a second, every company will become an API company. Why we don't take this engine and we give it to the whole world? And that was the beginning of open source Kong.” [18:38]

• Immigrant refusal to quit:
  “I could never visualize myself going back to the airport in Italy and my dad picking him up ... I would have died here without food. Like I cannot do that. And so that never crossed through.” [35:29]

• On startups lasting through the slog:
  “Don’t die. Like, don’t quit. Those are I think the things I learned along the way.” [36:35]

• How AI is reshaping the future of APIs:
  “Agents are going to consume Internet in a very different way than how human did ... Machine consuming Internet, it's through programming interface. ... behind the scene it's all APIs.” [27:27]

• Big vision for unified API+AI infrastructure:
  “What we are calling or building is a unified API and AI connectivity platform ... I think it will all converge into a unified broker.” [30:39]

Select Timestamps for Key Segments

• Fundraising hustles & living rough in SF: [01:03] – [07:45]
• Marketplace struggles and pivot to Kong: [08:30] – [19:08]
• Kong’s open-source moment and scaling breakthrough: [19:08] – [23:48]
• Founder grit philosophy & learning (don’t die): [35:19] – [36:42]
• API infrastructure’s role in the AI future: [23:48] – [34:11]

Final Thoughts

This episode provides a rare, no-glamor look at the hard-scrabble, near-miss reality of Silicon Valley entrepreneurship and the outsized perseverance required to endure. It offers foundational lessons on building enduring infrastructure companies, the evolution—and current centrality—of APIs, and why the next decade of AI will only intensify the need for robust, scalable API platforms like Kong.

For aspiring founders, Marietti’s story is not merely a tale of ingenuity, but a testimony to unwavering grit and the necessity of continually reinventing both product and self.

For more episodes, visit a16z.com.