Cloud Computing

Cloud skills are mostly provider-specific, so pick one platform and learn it well before comparing. Andrew Brown's AWS Certified Cloud Practitioner course, Microsoft's Azure Fundamentals path and Google Cloud Essentials all cover core services such as compute, storage, networking and identity. The AWS, Azure, GCP and IBM subcategories group courses by provider.

Architecture knowledge transfers across providers. The AWS Well-Architected Framework and Microsoft's Cloud Design Patterns describe tradeoffs in reliability, cost and security, and Designing Distributed Systems explains patterns used in container-based systems. For the theory underneath, Distributed Systems by Maarten van Steen and Andrew S. Tanenbaum is a full textbook.