This session will address all fundamental aspects of glass formation, including experimental, modeling, and theoretical developments in our understanding of the glass transition and relaxation. All glass-forming systems, including oxide, nonoxide, metallic, organic, and model glasses will be covered. Topics of interest include but are not limited to various relaxation phenomena and dynamical processes in the glass transition range, including fragility, structural and dynamical heterogeneity, nonexponential, and nonlinear relaxation.