In the Cloud Developer course on Udacity, you will gain a comprehensive understanding of cloud computing fundamentals. This includes learning about computing power, security, storage, networking, messaging, and management services in the cloud. Throughout the course, you will have the opportunity to explore and utilize the tools and services offered by Amazon Web Services (AWS) through interactive hands-on exercises. By the end of the course, you will have successfully deployed your first website on AWS. Additionally, you will learn how to create and deploy full-stack, REST-based applications on AWS using AWS Elastic Beanstalk. You will also gain knowledge on developing and deploying microservices, including different architecture patterns, scaling, resiliency, security, and monitoring. Furthermore, the course covers the process of refactoring a monolithic application into microservices and deploying it. Lastly, you will learn about serverless technologies and develop a complex serverless application, focusing on advanced features such as WebSockets and stream processing.