With the growth of the web, websites have grown as well. Unfortunately, this growth is not always a positive one, especially when it comes to load times. In today’s web ecosystem, sites are more interactive and visual than ever. This has certain drawbacks and can ultimately lead to decreased user engagement or even loss of revenue. During this talk we’ll discover the most important aspects of web performance, focussing on today’s modern web architectures and measurement tools. By the end of the talk you’ll be able to interpret lighthouse and page insights results while also being able to understand the core web vital metrics.