[Reference: AWS documentation on AWS CodeArtifact domains and repositories., This corresponds to Option B: Create a domain in the shared services account. Grant the organization read access and CreateRepository access.,  Step 2: Sharing Repositories Across Teams with Upstream ConfigurationsTo share common library packages across the organization, each application team's repository can point to the shared services repository as an upstream repository. This enables teams to access shared packages without managing them individually in each team's account., Action: Create a repository in the shared services account and set it as the upstream repository for each application team., Why: Upstream repositories allow package sharing while maintaining individual team repositories for managing their own packages., Reference: AWS documentation on Upstream repositories in CodeArtifact., This corresponds to Option D: Create a repository in the shared services account. Grant the organization read access to the repository in the shared services account. Set the repository as the upstream repository in each application team's repository.,  Step 3: Using Resource-Based Policies for Cross-Account AccessFor teams that need to share their packages with other application teams, resource-based policies can be applied to grant the necessary permissions. These policies allow cross-account access without having to manage permissions at the individual account level., Action: Create resource-based policies that allow read access to the repositories across application teams., Why: This simplifies management by centralizing permissions in the shared services account while allowing cross-team collaboration., Reference: AWS documentation on CodeArtifact resource-based policies., This corresponds to Option E: For teams that require shared packages, create resource-based policies that allow read access to the repository from other application teams' accounts., , , , ]