---
sourceDocument: Australia Strategic Portfolio Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/it-business-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Strategic Portfolio Management

ft:clusterId :

    - itbm

bundleId :

    - itbm

workflow :

    - Technology


---

# Task link types

# Task link types {#ariaid-title1}

Release version: Australia  
Updated March 18, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
Task links define the dependency relationship between tasks. Linking tasks creates dependencies that affect task start and finish dates and determine the critical path. The following table describes the four supported link
types.
{#task-link-types-project-management__table_hss_jzh_q3c__entry__3}

| Link type | Abbreviation | Description |
|-|-|-|
| Finish-to-Start | FS | Task B cannot start until Task A finishes. |
| Start-to-Start | SS | Task B cannot start until Task A starts. |
| Finish-to-Finish | FF | Task B cannot finish until Task A finishes. |
| Start-to-Finish | SF | Task B cannot finish until Task A starts. |
[Table 1. Types of task links]

{#task-link-types-project-management__table_hss_jzh_q3c}
**Related concepts**   

* [Project scheduling in Project Management](https://servicenow-prod.fluidtopics.net/3dnQztbobmF5NVLuL1kSjg "Define how tasks are sequenced, timed, and connected to determine when a project starts and finishes with Project scheduling. Project scheduling calculates task start and finish dates based on the project start date, task dependencies, constraints, and task duration in forward scheduling mode.")  
**Related tasks**   

* [Assign a project schedule](https://servicenow-prod.fluidtopics.net/UxNxm1mWaW2zd3QQnAwcvQ "Without an assigned schedule, a project calculates a day as a full 24 work hours. To schedule tasks by a more realistic work day, assign a schedule to the project. If the schedules provided in the base system do not suit your needs, define a new one.")