Add asynchronous messaging article and other minor updates

Asynchronous-messaging.md

@@ -1 +1,33 @@
-Placeholder to reference Asynchronous messaging solutions.
+**IMPORTANT NOTICE**
+
+The [asynchronous messaging implementations used in eShopOnContainers](https://github.com/dotnet-architecture/eShopOnContainers/tree/dev/src/BuildingBlocks/EventBus) to handle integration events, are simplified versions that have value in as much as they're useful for grasping the main concepts and scenarios.
+
+**DON'T USE THEM IN PRODUCTION**.
+
+For production-grade messaging solutions you can take a look at the following resources:
+
+- **Azure Service Bus** \
+  <https://docs.microsoft.com/azure/service-bus-messaging/>
+
+- **NServiceBus** \
+  <https://particular.net/nservicebus>
+
+- **MassTransit** \
+  <https://masstransit-project.com/>
+
+- **EasyNetQ** \
+  <http://easynetq.com/>
+
+You can also evaluate other messaging solutions such as:
+
+- **Brighter** \
+  <https://www.goparamore.io/>
+
+- **CAP** \
+  <http://cap.dotnetcore.xyz/>
+
+You can also explore some asynchronous messaging implementations for eShopOnContainers in the following GitHub repos:
+
+- Using [**NServiceBus**](https://particular.net/nservicebus): <https://github.com/Particular/eShopOnContainers/tree/archive>
+
+- Using [**CAP**](http://cap.dotnetcore.xyz/): <https://github.com/yang-xiaodong/eShopOnContainers>

Explore-the-application.md

@@ -50,12 +50,17 @@ Then, after providing the size (i.e. 10) and the current page (i.e. 1) for the d
 
 ## Xamarin.Forms mobile apps for Android, iOS and Windows
 
+Xamarin Mobile App supports the most common mobile OS platforms (iOS, Android and Windows/UWP). In this case, the consumption of the microservices is done from C# but running on the client devices, so out of the Docker Host internal network (Like from your network or even the Internet).
+
 You can deploy the Xamarin app to real iOS, Android or Windows devices.
+
 You can also test it on an Android Emulator based on Hyper-V like the Visual Studio Android Emulator (Do NOT install the Google's Android emulator or it will break Docker and Hyper-V, as mentioned in the [Windows setup page](Windows-setup)).
 
+![](images/Explore-the-application/xamarin-mobile-app.png)
+
 By default, the Xamarin app shows fake data from mock-services. In order to really access the microservices/containers in Docker from the mobile app, you need to:
 
-- Disable mock-services in the Xamarin app by setting the <b>UseMockServices = false</b> in the App.xaml.cs and specify the host IP in  BaseEndpoint = "http://10.106.144.28" at the GlobalSettings.cs. Both files in the Xamarin.Forms project (PCL).
+- Disable mock-services in the Xamarin app by setting the **UseMockServices = false** in the `App.xaml.cs` and specify the host IP in `BaseEndpoint = http://<the-actual-server-ip-address>` at the `GlobalSettings.cs`. Both files in the Xamarin.Forms project (PCL).
 - Another alternative is to change that IP through the app UI, by modifying the IP address in the Settings page of the App as shown in the screenshot below. 
 - In addition, you need to make sure that the used TCP ports of the services are open in the local firewall. 
 

Release-notes.md

@@ -41,6 +41,7 @@ The latest [3.0.0 release](https://github.com/dotnet-architecture/eShopOnContain
       - Sidecar implementation with Envoy/Linkerd
       - Improved API Gateway and resilience
       - gRPC for microservice-to-microservice communications
+      - Dev Spaces support (only for containers that don't use gRPC)
 
 #### New folder structure