What is the difference between IAM policies and IAM roles in Google Cloud?

  • IAM Policies define permissions for specific resources or groups of resources, specifying who has what type of access.
  • IAM Roles are a collection of permissions that can be assigned to users, groups, or service accounts, defining their level of access within a project or across projects.
  • IAM Conditions provide additional constraints that can be applied to IAM policies to further control access based on various factors such as time, IP address, or resource attributes.
  • IAM Permissions are individual actions that can be granted to users, groups, or service accounts, specifying what they are allowed to do within a project or across projects.
Understanding the distinction between IAM policies and roles is essential for designing effective access control strategies in Google Cloud Platform. Knowing when to use policies to define fine-grained permissions and when to use roles to assign predefined sets of permissions is key to managing access efficiently.
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