﻿---
title: Upgrade Enterprise Search
description: In Elastic Stack 9.0.0 and beyond, Enterprise Search is unavailable. We recommend migrating to Elasticsearch for improved performance, scalability, and...
url: https://docs-v3-preview.elastic.dev/elastic/docs-content/pull/4402/deploy-manage/upgrade/deployment-or-cluster/enterprise-search
---

# Upgrade Enterprise Search
In Elastic Stack 9.0.0 and beyond, Enterprise Search is unavailable. We recommend migrating to Elasticsearch for improved performance, scalability, and flexibility. For information about what Elasticsearch features you can use, check out this [blog post](https://www.elastic.co/blog/app-search-to-elasticsearch).
For complete information about resources and initiatives related to App Search migrations, future enhancements, and decommissioning, refer to [Migrating to 9.x from Enterprise Search 8.x versions](https://www.elastic.co/guide/en/enterprise-search/8.19/upgrading-to-9-x.html).