AWS CLOUD FORMATION

The topics you need to know for the cloud formation:

• Resources
  • Define Resources
  • Mandatory 
• parameters 
  • Defines the parameter value
  • references !Ref
• Mapping 
  • Define values as map 
  • Fn::FindInMap
  • !FindInMap [MapName, TopLevelKey, SecondLevelKey]
• Outputs 
  • Creates cross-stack references
  • Fn:ImportValue
  • !ImportValue
• Conditions
  • !Equals
• Transform
  • AWS::Serverless
  • AWS::Include 

• Use of CFT, Beanstalk, Autoscaling is free but you pay for AWS resources that these services create
• By default rollback everything on error
• Infrastructure as a code, Version controlled, declarative and flexible 
• Six available sections on a CloudFormation Template
• Template Description Declaration
• Template Format Version Declaration
• Parameters
• Resources -> Required
• Mappings
• Outputs

• Maximum stacks for the cloud formation is : 200 stacks 
• Number of Parameters in template in cloud formation is 60