Alejandro (Alex) Jaimes, Head of R&D at DigitalOcean, concludes a three-part series on artificial intelligence by discussing the implications of AI as a service for various groups, including hobbyists, developers, and companies. He emphasizes that starting small with basic machine learning algorithms can be an effective approach, allowing for iterative improvements and a human-centered focus on user interaction and experience. The field is rapidly evolving, with advancements in areas such as transfer learning, reinforcement learning, and unsupervised learning, and hardware developments are also on the horizon. Ultimately, the applications we build will determine what makes a difference, regardless of how "smart" the system is or what algorithms it uses.