This course aims at illustrating the modern mobile architectures, and at providing technical and methodological solutions for the development of mobile projects, where dimensions and performances limit a traditional approach. The course will expose the principal differences between mobile and traditional hardwares, the specificity of modern operating systems, methodologies and technologies for the development of multiplatform mobile applications, and business models with relative ecosystems of the principal mobile platforms. This course will couple methodological aspects and technological ones by means of concrete development of software projects.