---
sourceDocument: Australia Enterprise Architecture
sourceDocumentLink: https://www.servicenow.com/docs/r/australia/application-portfolio-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Enterprise Architecture

ft:clusterId :

    - appportman

bundleId :

    - appportman

workflow :

    - Technology


---

# Gantt view of TLM and TRM lifecycle timelines

# Gantt view of TLM and TRM lifecycle timelines {#ariaid-title1}

Release version: Australia  
Updated March 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
A Gantt chart in the Enterprise Architecture Workspace displays TLM and TRM timelines for business applications and their associated application services.  
The TLM and TRM application timelines can be viewed in the following timeline views, in the Gantt chart.

* Day
* Week
* Month
* Quarter
* Year
* Autofit  
  Note:  
  Autofit is selected by default.
{#eaw-gantt-view-of-tpm-and-trm-lifecycle-timelines__ul_wwc_vjt_zzb}

Choose the Select time scale button (![Select time scale button.]()) to change the view.
* **[TLM lifecycle timelines on Gantt chart](https://www.servicenow.com/docs/6WlTowLO~nHOZw3h7pKQ2w)**   
  For Technology Lifecycle Management (TLM), the business applications and their related application services (associated hardware models and software products) are displayed in a hierarchical structure. The corresponding timelines of the application services are displayed as bars on the Gantt chart.
* **[TRM lifecycle timelines on Gantt chart](https://www.servicenow.com/docs/9ZJO28tyAMT1PL5wJxnm9Q)**   
  For Technology Reference Model (TRM), the application services (hardware models and software products) are displayed in a hierarchical structure, similar to the TLM view. The corresponding lifecycle timelines of the application services are displayed as bars on the Gantt chart. It also displays the data for lifecycles with wild card versions. The TRM wildcard version ends with a '\*'.

**Related concepts**   

* [Working with Gantt chart views in EA Workspace](https://www.servicenow.com/docs/u1D6kkQp4rbs3bv_efn8kw "The Gantt charts in the Enterprise Architecture Workspace allow toggling between TLM (Technology Lifecycle Management) and TRM (Technology Reference Model) views. This enables enterprise architects to visualize key lifecycle stages such as deployment, maintenance, and retirement. Identify risks like outdated configurations or unsupported technologies.")