We built the Twilio prototype in about four months, and early customers provided encouragement by building interesting ideas on the platform, validating our direction.

Despite not raising significant funds, we decided to launch Twilio on November 20, 2008, and immediately started gaining customers who were willing to pay for our service.

When I started talking about the Twilio idea, I noticed that developers would initially seem uninterested, but then they would ask questions about potential use cases, indicating a latent need.

In 2008, I struggled to raise funds for Twilio due to the global financial meltdown, and many investors dismissed our developer service idea as foolish.

When we launched our messaging product, it quickly became a significant part of Twilio's revenue, surpassing our voice services.

I decided to pursue YouTube full-time after realizing I needed to make a clean break from my tech job to fully invest in my creative endeavors.

I was deeply depressed during the turmoil at Zenefits, but I realized I wanted the product to exist and that no one else would build it if I didn't.

Despite being featured on TechCrunch, I felt overwhelmed by the reality of our operations, which were chaotic and unstructured, leading me to quit my job to work on Watsi full-time.

The second time as a founder, I focused on building something that works and sought to disprove things with my first set of customers.