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AWS AWSCloudFormation documentation change

Service: AWSCloudFormation · 2025-11-19 · Documentation low

File: AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroup.md

Summary

Updated branding references and clarified circular dependency warning

Security assessment

Terminology updates and stylistic changes to existing security group documentation. Existing security advice remains unchanged.

Diff

diff --git a/AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroup.md b/AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroup.md
index 8204c8078..abf232387 100644
--- a//AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroup.md
+++ b//AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroup.md
@@ -5 +5 @@ SyntaxPropertiesReturn valuesExamplesSee also
-This is the new _AWS CloudFormation Template Reference Guide_. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
+This is the new _CloudFormation Template Reference Guide_. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
@@ -21 +21 @@ This type supports updates. For more information about updating stacks, see [AWS
-To cross-reference two security groups in the ingress and egress rules of those security groups, use the [AWS::EC2::SecurityGroupEgress](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-security-group-egress.html) and [AWS::EC2::SecurityGroupIngress](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-security-group-ingress.html) resources to define your rules. Do not use the embedded ingress and egress rules in the `AWS::EC2::SecurityGroup`. Doing so creates a circular dependency, which AWS CloudFormation doesn't allow.
+To cross-reference two security groups in the ingress and egress rules of those security groups, use the [AWS::EC2::SecurityGroupEgress](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-security-group-egress.html) and [AWS::EC2::SecurityGroupIngress](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-security-group-ingress.html) resources to define your rules. Do not use the embedded ingress and egress rules in the `AWS::EC2::SecurityGroup`. Doing so creates a circular dependency, which CloudFormation doesn't allow.
@@ -25 +25 @@ To cross-reference two security groups in the ingress and egress rules of those
-To declare this entity in your AWS CloudFormation template, use the following syntax:
+To declare this entity in your CloudFormation template, use the following syntax: