Kent Beck discusses trends in agile development including deployments, testing, co-location, complexity, scale, and business trends. Some key trends are accountability, responsibility, transparency, and focus on relationships with customers. There is also a trend toward more accountable business partners who deliver effective, reliable software on time at a reasonable price. Agile development techniques are well-suited for these trends as agile developers have methods for estimation, listening to customers, and producing reliable software. Both large and small organizations from various industries are adopting agile development due to benefits like improved relationships, reliability, flexibility, and return on investment.