Self-paced learning
While traditional degrees and certifications are generally curated paths of knowledge discovery, self-paced learning can be more personal interest-oriented. All the major cloud providers offer resources to explore general topics such as architecture and design best practices, as well as more coarse-grained content such as service-specific learning modules.
Microsoft offers a free, interactive, self-paced learning platform called Microsoft Learn (https://learn.microsoft.com/en-us/training/azure). It provides a wide range of learning paths, modules, and labs to help you learn about Microsoft products and services, including Microsoft Azure.
AWS provides self-paced labs and AWS Skill Builder (https://skillbuilder.aws). Self-paced labs provide the ability to learn AWS solutions by building them in an interactive experience. Each lab focuses on a specific topic and skills to develop. Finally, Google also offers online training comprising courses, hands-on labs...