---
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


---

# Working with Gantt chart views in EA Workspace

# Working with Gantt chart views in EA Workspace {#ariaid-title1}

Release version: Australia  
Updated March 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
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 Identify risks like outdated configurations or unsupported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.
* **[View TLM and TRM lifecycle timelines on the Gantt chart](https://www.servicenow.com/docs/g8pRQo_DgGsvx41XFWdANQ)**   
  Use the Gantt chart to view and track Technology Lifecycle Management (TLM) and Technology Reference Model (TRM) lifecycle timelines.

**Related concepts**   

* [Gantt view of TLM and TRM lifecycle timelines](https://www.servicenow.com/docs/JBobRe0ibz9pcNKb5DZCKw "A Gantt chart in the Enterprise Architecture Workspace displays TLM and TRM timelines for business applications and their associated application services.")