In this episode of the podcast "Make IT Fun" with Petr Glaser, there is a discussion about testing in IT and the roles of testers and developers. Petr emphasizes that testing is a process in which all team members should be involved from the beginning and that a tester should have a quality product mindset. The discussion also touches on the fact that the approach to testing can vary depending on what is being produced. In startups, it is important to deliver quickly, while in cases where lives depend on it, testing is different. This part of the conversation covers topics such as test automation, the importance of end-to-end tests, the use of static tests and TypeScript, and various techniques and tools to improve code quality. The conversation also explores how perspectives on testing are changing and whether a separate team of testers is necessary. Non-functional testing, such as performance tests and security testing, was also mentioned. Additionally, this episode delves into topics like software development in teams, the use of AI in software development, and education in the field of AI. Petr also introduces his new project, an educational platform for companies.