Any update on this?

Since it depends on references to the following types, the existing feature to define triggers via Terraform is somewhat incomplete. Please consider prioritizing a partial/iterative follow-through with basic support for these two resource types expected by† the provider (https://github.com/mongodb/terraform-provider-mongodbatlas): * App-Services App     * API reference: https://www.mongodb.com/docs/atlas/app-services/admin/api/v3/#tag/apps/operation/adminCreateApplication     * Comparable feature from realm-cli: https://www.mongodb.com/docs/atlas/app-services/reference/config/app/ * App-Services Data Source     * API reference: https://www.mongodb.com/docs/atlas/app-services/admin/api/v3/#tag/services/operation/adminCreateService     * Comparable feature from realm-cli: https://www.mongodb.com/docs/atlas/app-services/reference/config/data_sources/     † * https://registry.terraform.io/providers/mongodb/mongodbatlas/latest/docs/resources/event_trigger#app_id * https://registry.terraform.io/providers/mongodb/mongodbatlas/latest/docs/resources/event_trigger#config_service_id

Thanks for sharing feedback Will. We are planning on exposing a greater number of App Services resources in Terraform, but this effort is still several quarters away. In the interim you can leverage the App Service API or Atlas UI. Hope this helps. See here for more details: https://www.mongodb.com/docs/atlas/app-services/manage-apps/create/create-with-api/