Social skills Training (SST) is a widely used intervention technique in autism practice. Latest research has consistently shown moderate effects in large randomized controlled trials. Still, a multitude of questions remain around SST's effectiveness and efficiency. In addition, self-advocates have been critical of SST. This session provides both a state-of-the-art overview of SST, and insights into the latest developments in addressing challenges and the unknowns of SST in autism. We present new research findings and discuss issues of personalization of SST, its generalization, and cross-cultural validity, as well as the need to redefine outcomes, and optimize administration and dosage.