The [Conversational Development](http://conversationaldevelopment.com/2017/04/16/what-is-conversational-development/) Index (ConvDev Index) gives you an overview of your entire
of top-performing instances based on [usage ping data](../admin_area/settings/usage_statistics.md#usage-ping-core-only) that GitLab has
collected. Your score is compared to the lead score of each feature and then expressed as a percentage at the bottom of said feature.
Your overall index score is an average of all your feature score percentages - this percentage value is presented above all the of features on the page.