"By gathering important contributions from leading international experts in the field, this book explores the application of conversational agents in the specific role of tutor in e-learning processes (e.g. MOOCs, Mobile Assisted Learning). The aim is toinvestigate: [ a] their technological implementation; [ b] the underlying instructional design; [ c] the type of activities that conversational agents carry out; [ d] the outcomes of different experimental pilots and prototypes"--