What does it really take to build multiple successful startups—and recover from failure along the way?

In this episode of Startup Spotlight, hosts Shirish Nadkarni and Gowri Shankar sit down with Sonu Aggarwal, serial entrepreneur, former Microsoft executive, founder of Flash Communications, Cordon, and UnifiedSquare, and current President of TiE Seattle.

Sonu shares an honest and insightful account of his entrepreneurial journey—from building one of the world's first enterprise instant messaging platforms and selling it to Microsoft, to experiencing the hard lessons of startup failure, and ultimately building UnifiedSquare into a global leader acquired by Unisys. Along the way, he offers practical advice on fundraising, product-market timing, enterprise sales, founder transitions, and the importance of perseverance.

The conversation also explores Sonu's vision for strengthening Seattle's startup ecosystem through TiE Seattle and why he believes the region is poised to become one of the world's premier entrepreneurial hubs.

Whether you're a first-time founder, an experienced entrepreneur, investor, or simply fascinated by startup stories, this episode is packed with hard-earned wisdom from someone who has lived every stage of the entrepreneurial journey.

In this episode, you'll hear:

How an MIT brainstorming session led to the creation of one of the first enterprise instant messaging platforms.
The remarkable cold call that resulted in Microsoft acquiring Flash Communications.
Why Sonu's second startup failed—and the invaluable lessons it taught him about enterprise sales, revenue, and founding teams.
How recognizing an unmet customer need inspired the creation of UnifiedSquare.
The realities of leading a high-growth startup through years of ups and downs before achieving a successful exit.
The difficult experience of stepping down as CEO—and why founders should view leadership transitions through the lens of what's best for the company.
How UnifiedSquare's acquisition by Unisys unfolded through a structured M&A process.
His vision for making Seattle one of the world's leading startup ecosystems through TiE Seattle.

Brought to you by TiE Seattle
Hosts: Shirish Nadkarni and Gowri Shankar
Producers: Minee Verma and Eesha Jain
YouTube Channel: https://www.youtube.com/@fromstartuptoexitpodcast