A key factor in shaping the productivity and innovation of software developers is what has come to be called “Developer Experience.” We'll begin with an introduction to DevEx, exploring its definition and significance in the tech world. We will review the history of software development, highlighting how DevEx has evolved with technology, ooking also at areas in which you might not think about DevEx, like Accessibility, community, and even docs. Then we will discuss successful and problematic DevEx scenarios, offering strategies for improvement, and practical tips for enhancing DevEx, discussing better practices and common pitfalls. This talk is an essential journey through the world of DevEx, ideal for developers, team leaders, and tech enthusiasts keen on optimizing their development environments for better outcomes.