Cristian Contreras is the Director of Marketing at FundThrough and organizer of the Growth Hacking Toronto Meetup. He has received awards for his work as a young entrepreneur. The document discusses how startups can use growth hacking tactics to reduce risk, build assets, and even out the playing field against large corporations. It outlines priorities and progression for optimization and growth in digital marketing through building audiences with content or paid access. Specific growth hacking tactics include incentivized and forced referrals, social design, user generated content, integrations, and infiltration of audiences. The execution process of growth hacking involves launching initiatives, managing them, automating, and prioritizing optimization.