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AWS Infrastructure Services

Infrastructure Services   AWS CloudFormation    AWS CloudFormation provides several built-in functions that help you manage your stacks. Use intrinsic functions in your templates to assign values to properties that are not available until runtime. Currently, you can use intrinsic functions in resource properties, outputs, metadata attributes, and update policy attributes. You can also use intrinsic functions to conditionally create stack resources. Examples - Fn::Base64, GetAtt, GetAZ, Select, Join, Sub, Transform, Ref The  Fn::GetAtt  intrinsic function returns the value of an attribute from a resource in the template.  The intrinsic function  Fn::Transform  specifies a macro to perform custom processing on part of a stack template. Macros enable you to perform custom processing on templates, from simple actions like find-and-replace operations to extensive transformations of entire templates.  The intrinsic function  Ref  returns ...