This chapter commences our journey into web development in Scala. Web development has become an area where the choice of architectures and frameworks is tremendous. Finding the right tool for the job is not always a straightforward task as it ranges from traditional Java EE or Spring-based architectural styles to more recent Ruby on Rails-like approaches. Most of the existing solutions still rely on the adoption of the servlet-container model, whether they use lightweight containers such as Jetty/Tomcat or support EJBs (Enterprise JavaBeans) such as JBoss, Glassfish, WebSphere, or WebLogic. Many online articles and conference talks have tried to compare some of the alternatives, and as these frameworks evolve rapidly and sometimes focus on different aspects (such as frontend versus backend), compiling a fair and accurate list remains difficult. In the Scala world, alternatives to create web applications range from lightweight frameworks...