---
title: Gantt view of TLM and TRM lifecycle timelines
description: A Gantt chart in the Enterprise Architecture Workspace displays TLM and TRM timelines for business applications and their associated application services.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/application-portfolio-management/eaw-gantt-view-of-tpm-and-trm-lifecycle-timelines.html
release: australia
topic_type: concept
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Exploring Enterprise Architecture Workspace, Enterprise Architecture Workspace, Enterprise Architecture]
---

# Gantt view of TLM and TRM lifecycle timelines

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.


Choose the **Select time scale** button \(\[Omitted image "calendar-icon.png"\] Alt text: Select time scale button.\) to change the view.

-   **[TLM lifecycle timelines on Gantt chart](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/application-portfolio-management/eaw-tpm-lifecycle-timelines-on-gantt-chart.md)**  
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://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/application-portfolio-management/eaw-trm-lifecycle-timelines-on-gantt-chart.md)**  
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 ‘\*’.

**Parent Topic:**[Exploring Enterprise Architecture Workspace](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/application-portfolio-management/explore-eaw.md)

**Related topics**  


[Working with Gantt chart views in EA Workspace](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/application-portfolio-management/eaw-work-with-gantt-chart-views.md)