Update Identity descriptions to include dependent extension list (#714)

* Update Identity descriptions to include dependent extension list

* Add blank line around lists.

* Add link to Identity overview from Android to Edge migration

* Reorder Identity overview to put note about 3rd party extensions last as it is less common.

* Use 'third party' instead of '3rd party'

* In overview, distinguish Identity as either 'for Edge Network' or 'for Experience Cloud ID Service'

src/pages/edge/identity-for-edge-network/index.md

@@ -11,7 +11,9 @@ import Tabs from './tabs/index.md'
 
 # Identity for Edge Network
 
-The Adobe Experience Platform Identity mobile extension enables identity management from your mobile app when using the Adobe Experience Platform Mobile SDK and the [Edge Network extension](../edge-network/index.md).
+The Identity for Edge Network mobile extension enables identity management, including the Experience Cloud ID (ECID), from your mobile app when using the Adobe Experience Platform Mobile SDK and the [Edge Network extension](../edge-network/index.md).
+
+Use the Identity for Edge Network extension when including the Edge Network extension into an application. The Identity for Edge Network extension is not used with Adobe Solution extensions, which must use the [Identity for Experience Cloud ID Service extension](../../home/base/mobile-core/identity/index.md).
 
 ## Configure the Identity extension in the Data Collection UI
 
@@ -59,7 +61,7 @@ iOS
 
 ## Advertising identifier
 
-The Edge Identity extension compares the previously stored advertising identifier value with the new value received from the [`setAdvertisingIdentifier`](./api-reference.md#setadvertisingidentifier) API and handles the following scenarios:
+The Identity for Edge Network extension compares the previously stored advertising identifier value with the new value received from the [`setAdvertisingIdentifier`](./api-reference.md#setadvertisingidentifier) API and handles the following scenarios:
 
 Ad tracking enabled - when the new value sent to the API is:
 

src/pages/home/base/mobile-core/identity/index.md

@@ -12,7 +12,19 @@ import Tabs from './tabs/index.md'
 
 # Identity
 
-The Identity extension enables your app with the Experience Cloud ID (ECID). This service helps with the synchronization of Adobe and other customer identifiers.
+The Identity for Experience Cloud ID Service extension enables your app with the Experience Cloud ID (ECID). This service helps with the synchronization of Adobe and other customer identifiers.
+
+Include the Identity extension in your application when using any of the following Adobe Solution extensions:
+
+   * [Adobe Analytics](../../../../solution/adobe-analytics/index.md)
+   * [Adobe Audience Manager](../../../../solution/adobe-audience-manager/index.md)
+   * [Adobe Campaign Standard](../../../../solution/adobe-campaign-standard/index.md)
+   * [Adobe Media Analytics](../../../../solution/adobe-media-analytics/index.md)
+   * [Adobe Target](../../../../solution/adobe-target/index.md)
+
+If your application uses the [Edge Network extension](../../../../edge/edge-network/index.md), then it must include the [Identity for Edge Network extension](../../../../edge/identity-for-edge-network/index.md). The Identity for Edge Network extension does not replace the Identity for Experience Cloud ID Service extension and both may be required in an application. See the [FAQ](../../../../edge/identity-for-edge-network/faq.md) for more information.
+
+When using third party extensions, check with the extension developer to understand if the Identity extension is a required dependency.
 
 <InlineAlert variant="warning" slots="text"/>
 

src/pages/solution/adobe-analytics/migrate-to-edge-network.md

@@ -80,7 +80,7 @@ For more details, please refer to the [Consent for Edge Network extension docume
 
 When using Identity for Edge Network extension, the Mobile SDK automatically migrates an existing ECID (previously known as MID) to the new XDM IdentityMap format out of the box. If you are using custom identities with the `syncIdentifier` / `syncIdentifiers` APIs, you should consider migrating your IDs to the XDM format.
 
-The previous Identity for Experience Cloud ID Service extension can be safely removed from the SDK registration process if there are no other extensions which rely on it, such as Target, Campaign and others.
+The previous Identity for Experience Cloud ID Service extension can be safely removed from the SDK registration process if there are no other extensions which depend on it. A list of dependent extensions may be found on the [Identity overview page](../../home/base/mobile-core/identity/index.md).
 
 If you need further assistance, please contact [Adobe Experience Cloud customer care](https://experienceleague.adobe.com/?support-solution=General#support).