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AWS Identity and Access Management
User Guide

IAM JSON Policy Elements: Supported Data Types

This section lists the data types that are supported when you specify values in JSON policies. The policy language doesn't support all types for each policy element; for information about each element, see the preceding sections.

  • Strings

  • Numbers (Ints and Floats)

  • Boolean

  • Null

  • Lists

  • Maps

  • Structs (which are just nested Maps)

The following table maps each data type to the serialization. Note that all policies must be in UTF-8. For information about the JSON data types, go to RFC 4627.

Type JSON

String

String

Integer

Number

Float

Number

Boolean

true false

Null

null

Date

String adhering to the W3C Profile of ISO 8601

IpAddress

String adhering to RFC 4632

List

Array

Object

Object