"Big Ideas in App Architecture" is a weekly podcast hosted by David Joy, offering insights from tech industry experts on building modern, data-intensive systems. The podcast covers a range of topics, including Chick-fil-A's use of edge computing to enhance app performance, Andy Pavlo's application of machine learning for database optimization, and Matt Ranney's strategies for improving microservices reliability at DoorDash. Other episodes explore Peter Mattis's journey with CockroachDB, Shadi Rostami's innovative engineering culture at Amplitude, and Ken Pickering's insights into data warehousing. The series also features discussions on maintaining legacy systems with Marianne Bellotti, multi-cloud adoption with Erol Kavas, fostering strong engineering teams with Meg Adams, and Joe Lynch's theories on software engineering practices. Each episode provides valuable technical insights and lessons learned, aiming to help listeners enhance their own system designs and engineering approaches.