---
title: 2024 Optimizely Performance Edge release notes
slug: performance-edge/release-notes/2024-optimizely-performance-edge-release-notes
docTags: 
createdAt: 2026-08-31T17:04:42.721Z
---

- Optimizely Performance Edge

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## December

Released event properties, which let you attach additional information to an event to all customers. See [Custom events.](docId:1okSTW6eZjYr1urn1-xpr)

## October

- Released event properties to open beta. See [Custom events](docId:1okSTW6eZjYr1urn1-xpr).
- Added the ability to use spaces and non-alphanumeric characters for event keys. See [Custom events](docId:1okSTW6eZjYr1urn1-xpr).

## September

- Released [Optimizely Reporting for Experimentation](docId\:YWh1V46NbUVu2h0Wjy3zH), providing you with dashboards and reports that show key metrics such as experiment velocity, conclusive rate, win rate, and uplift.
- Updated the **API Name** text field in the** New Custom Event** page to automatically populate with the** Name** formatted in lowercase, replacing any non-alphanumeric characters with underscores. See [Create a custom event](docId:1okSTW6eZjYr1urn1-xpr).

## August

Released event properties to beta. Event properties let you filter a created event in Optimizely’s UI based on additional information you have attached to it. When you send events, you can add information about the product or action performed to create a more specific metric when using the event in the experiment results. Contact your Customer Success Manager or [sign up for the beta on Optimizely.com](https://www.optimizely.com/beta). See [Custom events](docId:1okSTW6eZjYr1urn1-xpr).

## June

Released the ability to sign up for email notifications when Optimizely Experimentation detects a [sample ratio mismatch](docId\:JFKBHyB1tPQH0-EMRjAOR) in your running experiments. See[ Enable email notifications in Optimizely Experimentation](docId\:BU9xpaNSi4fHfBQ36bOdr).