AWS Cloud Practitioner Essentials is Amazon's free introductory course on AWS, the largest cloud provider. You learn EC2 (servers), S3 (storage), databases, pricing, security, and AWS's core services. The course is available free through Coursera (audit mode) and AWS's training portal. After finishing, you're prepared for the AWS Cloud Practitioner (CLF-C01) certification and understand cloud fundamentals. AWS holds the largest share of the infrastructure-as-a-service market and is the most in-demand cloud platform. The main limitation: this is foundational. For real AWS work, you need deeper courses and hands-on practice.
The worldwide infrastructure-as-a-service market grew 22.5% in 2024 to $171.8 billion, and AWS took the largest slice of it at 37.7% (source: gartner.com/en/newsroom/press-releases/2025-08-06-gartner-says-worldwide-iaas-public-cloud-services-market-grew-22-point-5-percent-in-2024).