Overall, these are excellent practice tests and I highly recommend them. The explanations are great. However, the wording of some of the questions is unfair and does not match the solutions. For example, there is a question about how to prevent developers from terminating instances that have FULL access. The answer choice to me did not make sense as it could stop the offense in the moment, but not from being circumvented in the long term. Another is a question that involved using AWS Mobile Push service. AWS doesn’t have a Mobile Push service; they have SNS that can do mobile pushes, so it made the question unnecessarily confusing. Other than that, great stuff!