Hello, I am new to Pulumi. I was wondering if policy packs is only confined to aws and now available for azure? I see examples for aws but nothing for azure? https://www.pulumi.com/docs/iac/using-pulumi/crossguard/core-concepts/

You can write your own Policy Packs for any provider. For existing templates, there's plenty for Azure, more than for aws:

aws-iso27001-compliance-policies-typescript           A minimal Policy Pack for Aws using Pulumi Compliance Ready Policies and TypeScript.
  aws-javascript                                        A minimal Policy Pack for AWS using JavaScript.
  aws-pcidss-compliance-policies-typescript             A minimal Policy Pack for Aws using Pulumi Compliance Ready Policies and TypeScript.
  aws-python                                            A minimal Policy Pack for AWS using Python.
  aws-typescript                                        A minimal Policy Pack for AWS using TypeScript.
  awsguard-javascript                                   A minimal AWSGuard Policy Pack using JavaScript.
  awsguard-typescript                                   A minimal AWSGuard Policy Pack using TypeScript.
  azure-classic-javascript                              A minimal Policy Pack for Azure using JavaScript.
  azure-classic-python                                  A minimal Policy Pack for Azure using Python.
  azure-classic-typescript                              A minimal Policy Pack for Azure using TypeScript.
  azure-iso27001-compliance-policies-typescript         A minimal Policy Pack for Azure using Pulumi Compliance Ready Policies and TypeScript.
  azure-javascript                                      A minimal Policy Pack for Azure using JavaScript.
> azure-pcidss-compliance-policies-typescript           A minimal Policy Pack for Azure using Pulumi Compliance Ready Policies and TypeScript.
  azure-python                                          A minimal Policy Pack for Azure using Python.
  azure-typescript                                      A minimal Policy Pack for Azure using TypeScript.
  gcp-javascript                                        A minimal Policy Pack for GCP using JavaScript.
  gcp-python                                            A minimal Policy Pack for GCP using Python.
  gcp-typescript                                        A minimal Policy Pack for GCP using TypeScript.
...

Super!