diff --git a/20.-Azure-Devops-pipelines.md b/20.-Azure-Devops-pipelines.md
index b833283..cecb866 100644
--- a/20.-Azure-Devops-pipelines.md
+++ b/20.-Azure-Devops-pipelines.md
@@ -37,6 +37,12 @@ Once the build pipeline is created in Azure Devops you can override some of its
 
 ![Editing the build pipeline](./img/azure-devops/edit-build.png)
 
+## Pull Request Builds
+
+We have enabled the build pipelines for Pull Request. There are some differences between a normal build and the build triggered by a PR though:
+
+* The build triggered from a PR do not push the docker images to any docker registry.
+
 ## Windows vs Linux images
 
 Each build generates the windows AND linux images (note that we could have two separated builds instead). Build pushes the images to [eshop Dockerhub](https://hub.docker.com/u/eshop/).