---
title: CMDB service classes
description: Service Reliability Management \(SRM\) typically supports several Configuration Management Database \(CMDB\) service classes.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-operations-management/service-reliability-management/sr-cmdb-service-classes.html
release: australia
product: Service Reliability Management
classification: service-reliability-management
topic_type: reference
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Service Reliability Management reference, Service Reliability Management, ITOM AIOps, IT Operations Management]
---

# CMDB service classes

Service Reliability Management \(SRM\) typically supports several Configuration Management Database \(CMDB\) service classes.

Types of CMDB service classes that SRM supports:

-   Service instances \(cmdb\_ci\_service\_auto\)
-   Technology management services \(cmdb\_ci\_service\_technical\)
-   Query-based services \(cmdb\_ci\_query\_based\_service\)
-   Mapped application services \(cmdb\_ci\_service\_discovered\)
-   Calculated application services \(cmdb\_ci\_calculated\)
-   Tag-based application services \(cmdb\_ci\_service\_by\_tags\)

**Parent Topic:**[Service Reliability Management reference](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/service-reliability-management/service-reliability-management-reference.md)