“This book is the first comprehensive account of Gaussian harmonic analysis, and as such is a most welcome addition to the literature suitable for experts in the field and advanced graduate students who want to learn the subject.” (Jan van Neerven, Mathematical Reviews, September, 2020)“This well-written and organized (mainly self-contained) book is a reader-friendly manual in the field of Gaussian harmonic analysis. It can be recommended for experts and for graduate, postgraduate and doctoral students.” (Michael Perelmuter, zbMATH 1421.42001, 2019)