STANDARDIZE TAGS USING AWS ORGANIZATIONS | AWS ORGANIZATIONS TAG POLICY

You can use tag policies to maintain consistent tags, including the preferred case treatment of tag keys and tag values.
Tag policies are a type of policy that can help you standardize tags across resources in your organization's accounts. In a tag policy, you specify tagging rules applicable to resources when they are tagged.
For example, a tag policy can specify that when the CostCenter tag is attached to a resource, it must use the case treatment and tag values that the tag policy defines. A tag policy can also specify that noncompliant tagging operations on specified resource types are enforced. In other words, noncompliant tagging requests on specified resource types are prevented from completing. Untagged resources or tags that aren't defined in the tag policy aren't evaluated for compliance with the tag policy.