The first thing that I gained from this course is knowledge of the cloud. Through this course, I have learned and understood more deeply the functions and structures of the cloud and also the imperative of the cloud to mankind. The AWS academy not only teaches me the basics of the cloud, but it also provides me with lab exercises for actual operation. Besides that, this course also teaches me deeply about the services provided by AWS and also every single element in AWS, for instance, Amazon EC2, AWS Lambda, Amazon Elastic Block Store, and so on. I am convinced that this knowledge that I have learned from AWS Academy is very important for me and will be useful in my future.