This document summarizes a presentation on implicit conversions in Scala given by Atsushi Oku of TIS Inc. The presentation introduces implicit conversions, explains when the compiler looks for implicit conversions to resolve type errors or find missing methods, and provides examples of defining implicit conversions by adding methods to existing classes or using implicit classes. It also briefly describes Scala training courses offered by Typesafe and promotes joining a later presentation on using Scala in business applications at TIS.