Rachel Davies is an agile coach who gave a presentation on improving collaboration and building trust in teams. She discussed how trust is the foundation for teamwork and collaboration according to agile principles. She provided tools and techniques for building trust such as sharing personal histories, behavioral profiling, raising awareness of cognitive biases, establishing working agreements, and focusing on credibility, reliability, intimacy, and self-orientation in the trust equation. The presentation emphasized that building trust takes time and recommended supporting the team, creating transparency, asking for help, and displaying patience.