Stack History: A Timeline of The Top 2019 Unicorn IPO's Tech Stack Evolution

By the end of 2019, more than a dozen tech unicorns will have gone public after many years of growth as private companies. Wall Street analysts have offered plenty of commentary on market trends and the economic implications of so many tech IPOs.

But at StackShare, we wondered: what technology stacks did these unicorns use at each round of funding? How have their tech stacks evolved over their lifetime? And what third-party tools have been crucial to their scale and success?

To answer those questions, we’ve collected and curated key technology decisions from nine unicorns—Airbnb, Lyft, Pinterest, Slack, Zoom, PagerDuty, WeWork, Uber, and Postmates—and, for the first time, compiled them into a contextual timeline for easy comparison across dates and key funding events. Interested to see when these unicorns started adopting containers or moved from monolith to SOA? Dive in below.

How we did it

Stack Histories is a series of deep-dive analyses that explore the historic decisions of tech companies like Slack or Uber. In Stack Histories, we explore context and thoughts behind these Stack Decisions with interesting information stretching from a company’s origin to the present. We dig deep to find the information that charts a company’s journey, covering every aspect of the technology they innovated and implemented along the way.

Logos of the 8 companies

Powered by Stack Decisions Ⓡ


Have a tip?

If we’ve missed any key details, or if you’d like to add a new event to the timeline, just email stackhistory@stackshare.io.


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