Create how-to-upgrade-cluster.md

Author: suvishodcitus

articles/cosmos-db/mongodb/vcore/how-to-upgrade-cluster.md

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+---
+title: Upgrade a cluster.
+titleSuffix: Azure Cosmos DB for MongoDB vCore
+description: Steps to upgrade Azure Cosmos DB for MongoDB vCore cluster from a lower version to latest version.
+author: suvishod
+ms.author: suvishod
+ms.reviewer: gahllevy
+ms.service: cosmos-db
+ms.subservice: mongodb-vcore
+ms.custom:
+ms.topic: how-to
+ms.date: 22/07/2024
+---
+
+# Upgrade a cluster in Azure Cosmos DB for MongoDB vCore
+
+[!INCLUDE[MongoDB vCore](~/reusable-content/ce-skilling/azure/includes/cosmos-db/includes/appliesto-mongodb-vcore.md)]
+
+Azure Cosmos DB for MongoDB vCore provides customers with a convenient self-service option to upgrade to the latest MongoDB version. This feature ensures a seamless upgrade path with just a click, allowing businesses to continue their operations without interruption.
+
+
+## Prerequisites
+
+- An existing Azure Cosmos DB for MongoDB vCore cluster.
+  - If you don't have an Azure subscription, [create an account for free](https://azure.microsoft.com/free).
+  - If you have an existing Azure subscription, [create a new Azure Cosmos DB for MongoDB vCore cluster](quickstart-portal.md).
+
+
+## Upgrade a cluster
+
+Here are the detailed steps to upgrade a cluster to latest version:
+
+1. Sign in to the [Azure portal](https://portal.azure.com).
+
+2. Go to the **Overview** blade of your Azure Cosmos DB for MongoDB vCore cluster and click the **Upgrade** button as illustrated below.
+
+> [!NOTE]
+> The upgrade button will stay disabled if you're already using the latest version.
+
+3. A new window will appear on the right, allowing you to choose the MongoDB version you wish to upgrade to. Select the appropriate version and submit the upgrade request.
+
+
+
+## Next steps
+
+In this guide, we'll learn more about point in time restore(PITR) on Azure Cosmos DB for MongoDB vCore.
+
+> [!div class="nextstepaction"]
+> [Restore cluster](how-to-restore-cluster.md)