{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/microsoft.graph.serviceAnnouncement",
  "title": "microsoft.graph.serviceAnnouncement",
  "allOf": [
    {
      "$ref": "#/components/schemas/microsoft.graph.entity"
    },
    {
      "title": "serviceAnnouncement",
      "required": [
        "@odata.type"
      ],
      "type": "object",
      "properties": {
        "healthOverviews": {
          "type": "array",
          "items": {
            "$ref": "#/components/schemas/microsoft.graph.serviceHealth"
          },
          "description": "A collection of service health information for tenant. This property is a contained navigation property, it is nullable and readonly.",
          "x-ms-navigationProperty": true
        },
        "issues": {
          "type": "array",
          "items": {
            "$ref": "#/components/schemas/microsoft.graph.serviceHealthIssue"
          },
          "description": "A collection of service issues for tenant. This property is a contained navigation property, it is nullable and readonly.",
          "x-ms-navigationProperty": true
        },
        "messages": {
          "type": "array",
          "items": {
            "$ref": "#/components/schemas/microsoft.graph.serviceUpdateMessage"
          },
          "description": "A collection of service messages for tenant. This property is a contained navigation property, it is nullable and readonly.",
          "x-ms-navigationProperty": true
        },
        "@odata.type": {
          "type": "string"
        }
      }
    }
  ],
  "x-ms-discriminator-value": "#microsoft.graph.serviceAnnouncement"
}