One of the techniques we recommend for implementing zero trust security for CI/CD is to authenticate your pipelines for cloud services access via federated identity mechanisms like OpenID Connect (OIDC). As GitHub Actions is widely used — and this important technique remains underused — we want to call out OIDC for GitHub Actions. This way you can avoid storing long-lived access tokens for your cloud resources, and your pipelines won't get direct access to secrets. However, be sure to scope access carefully so that actions really run with least privilege.