Update index.md

Author: joeynmq

src/connections/destinations/catalog/actions-braze-web/index.md

@@ -172,3 +172,14 @@ When "Enable SDK Authentication" is enabled, Segment will set Braze's `enableSdk
 
 Keep the following in mind if you plan to move to Braze (Actions) from the classic Braze destination.
 {% include components/actions-map-table.html name="braze-web" %}
+
+
+## FAQ
+
+### How Debounce Middleware works? 
+
+The [Debounce Middleware](/docs/connections/destinations/catalog/actions-braze-web/#debounce-middleware) action is unique and behaves differently from the other actions. Debounce Middleware logic is executed at the source-level: 
+
+- When an Identify call is fired on a website, we will first cache and compare the user traits. If the user traits object differs from what has been cached previously, the data will be passed on to the destination flow (Destination Filters → Insert Functions → Destination Mappings). 
+
+- Otherwise, if user traits are the same as what's cached, we assume that that data was already sent to Braze and a new request is not made to their system.