History

The change history logs most actions taken in Optimizely Feature Experimentation projects and flags.

Optimizely Feature Experimentation logs most actions you can perform for a project, such as creating a page, modifying a rule, and adding and removing audiences. These actions are listed in the change history, which displays the record of user activity for each of your projects.

If an experiment starts to behave strangely or stops working correctly, you can troubleshoot by checking the change history to see which changes were made, when, and by which collaborator. The detailed change history creates an activity trail that provides additional security to individuals and teams with multiple collaborators.

Project history

Each project’s change history is listed under History.

Use the filters at the top of the page to refine the changes displayed. Currently, you can filter to show changes by type, date range, and source.

For each change, you will see a Show details button. Click the button to view the specific change details, or hold alt (Windows) or option (Mac) + click to show or hide all changes.

show details of change — Click image to enlarge

The change history detail panel displays descriptions of each change, along with the original (before changes) in red on the left side and the updated code (after changes) in green on the right side. If you are interested, you can find out more about how this data is structured in our public API docs. To collapse the change detail view, click the Hide details button.

diff between old and new — Click image to enlarge

Project changes tracking

Account

Action	Captured
All changes	No

Attributes

Action	Captured
Create	Yes
Key	Yes
Description	Yes

Audience

Action	Captured
Create	Yes
Name	Yes
Description	Yes
Conditions	Yes

Environments

Action	Captured
Creation	Yes
Key	Yes
Description	Yes
Archive / Unarchive	No
Restricted Access	Yes

Event

Action	Captured
Key	Yes
Description	Yes

Flag

Action	Captured
Creation	Yes
Deletion	Yes
Archived	Yes

Group

Action	Captured
Create	Yes
Name	Yes
Description	Yes
Experiment	Yes
Traffic Allocation	Yes

Project Settings

Action	Captured
Create	Yes
Name	Yes
Description	Yes
Statistical Significance	Yes
Create Webhook	No
Regenerate Webhook Secret	No
Delete Webhook	No
Integrations	No
Collaborators	No
Time Zone	No
IP Anonymization	No
Bot Filtering	No

Ruleset

Action	Captured
Turn flag on/off in an Environment	Yes
Change rule priority	Yes
Add, delete, or duplicate a rule	Yes

Variation

Action	Captured
Create	Yes
Update existing variation name	Yes
Delete variation	Yes

📘
Note

Various Project updates (captured and not) may result in updates to tracked project keys (for example, code_revision, js_file_size).

Custom Analytics Integrations are technically Extensions, so those changes will be found with a type of Extensions.

Pageview Events are technically just Pages, so those changes will be found with a type of Pages.

Default Environments will not have corresponding change logs upon project creation.

Flag history

To view a flag's history, navigate to the flag, then select History.

The flag's change history works similarly as the project's change history. Use the drop-downs to filter by Type, Date, and Source (change through the API or Web UI).

For each change, you will see a Show details button. Click the button to view the specific change details, or hold alt (Windows) or option (Mac) + click to show or hide all changes.

Refer to the Project History section for an in-depth description of of the change history panel.

Flag changes tracking

Flag Settings

Action	Captured
Create	Yes
Update	Yes
Delete	Yes
Enable outlier smoothing for revenue	Yes

Ruleset

Action	Captured
Turn flag on/off in an Environment	Yes
Change rule priority	Yes
Add, delete, or duplicate a rule **	Yes

Rule

Action	Captured
Create **	Yes
Update rule name	Yes
Update audience conditions	Yes
Update traffic allocation	Yes
Add metric	Yes
Delete metric	Yes
Re-order metric	Yes
Update distribution mode	Yes
Update variation delivered	Yes
Update variation traffic allocation	Yes
Add variation	Yes
Delete variation	Yes
Add, update, or delete allowlist	Yes
Duplicate Rule **	Yes
Delete Rule **	Yes

** Create, delete, and duplicate rule history will be listed both in the Ruleset updates and the Rule updates

Variation

Action	Captured
Create	Yes
Update existing variation name	Yes
Delete variation	Yes

Updated 12 days ago