Dive into a comprehensive 3.5-hour tutorial series on AWS CloudFormation, covering essential concepts from basic overview to advanced features. Learn to create and manage templates, work with parameters, mappings, and intrinsic functions, and explore stack change sets. Master user data implementation for EC2 instances, understand pseudo parameters, and utilize the outputs section. Gain in-depth knowledge of various CloudFormation functions like Fn::Sub, Fn::Join, Fn::Select, Fn::GetAtt, Fn::Split, Fn::FindInMap, Fn::GetAZs, Fn::ImportValue, Fn::Cidr, and Fn::Base64. Discover how to implement cross-stack references and retain resources during stack deletion using DeletionPolicy.