Explore four diverse lightning talks from NDC Sydney 2019, covering data storytelling, non-relational database design, blockchain and AI integration, and open-source software trust. Learn effective techniques for communicating data insights using Power BI, discover key principles for designing non-relational database models, understand the interplay between deterministic blockchain and probabilistic AI, and examine the challenges and solutions for ensuring trust in open-source software. Gain valuable insights from industry experts in just 41 minutes, applicable to various aspects of modern software development and data analysis.