This episode explores the entrepreneurial journey of Callum McKeefery, founder of Partner.io and Reviews.io. The discussion begins with Partner.io, a platform streamlining tech company partnerships with agencies. Against this backdrop, McKeefery recounts his Reviews.io story, detailing how a chance question during a failed pitch led to the creation of a bootstrapped, eight-figure ARR SaaS business. More significantly, he shares his scrappy marketing tactics, including guerrilla marketing and leveraging LinkedIn to outmaneuver larger competitors. For instance, he describes using a vinyl-wrapped bus and even stenciling his logo onto the street near a conference. The narrative then pivots to his decision to sell Reviews.io for $82 million due to his son's rare genetic disease, highlighting the emotional toll of this decision despite its financial success. Finally, McKeefery discusses his return to entrepreneurship with Partner.io, emphasizing the importance of customer feedback, rapid MVP development, and building a team from diverse backgrounds, illustrating how these strategies contributed to his previous success and inform his current venture. This underscores the evolving landscape of SaaS, demanding comprehensive solutions and adaptable marketing strategies for success.