Advances in computer and mobile device technology are rapidly changing the landscape of testing. Paper-and-pencil tests have been phased out in many environments and have been replaced with computer-based assessments that use computerized adaptive testing technology to reduce examinee seat time while maintaining measurement precision. The desire to provide secure on-demand assessment has sparked research on automatic item generation, online proctoring and score verification, and psychometric methods that are suitable for items beyond multiple-choice and ordered-categorical formats. The desire to measure critical thinking, interpersonal styles, health, and professional competencies in training, licensure, and selection contexts has galvanized interest in assessments involving open-ended responses, simulations, and serious games. This chapter describes recent advances in these areas, some applications in education, work, and health care, and research questions that must be answered concerning validity.