AWS Machine Learning Specialty is a certification awarded by AWS that validates an individual's expertise in performing machine learning-related tasks on AWS. The duration of the test is 3 hours (180 minutes) with 65 questions. Of the 65 questions, only 50 are scored and the remaining 15 are used by AWS to evaluate whether they can be used as scored questions in the future. However, there is no way to know if a question is scored or unscored in the examination. The questions can be multiple choice, where you choose one correct response from the list of choices, or multiple responses where there could be multiple right answers to the question.