Migrate to conversational language understanding before Language Understanding (LUIS) is retired on 1 October 2025

On 1 October 2025, Language Understanding (LUIS) will be retired. Before that date, please migrate to conversational language understanding, a capability of Azure Cognitive Services for Language. Conversational language understanding provides many of the capabilities of LUIS, plus enhancements such as: * Enhanced AI quality using state-of-the-art machine learning models * Multilingual capabilities that allow you to train in one language and predict in others * Built-in routing between conversational language understanding and custom question answering projects using orchestration workflow * Access to a suite of features available on Azure Cognitive Services for Language From 1 April 2023, you won’t be able to create new Language Understanding (LUIS) resources. All Language Understanding resources created before that date will be supported until 1 October 2025\. Required action To avoid disruptions to your applications that use Language Understanding (LUIS), first review [pricing](https://azure.microsoft.com/en-us/pricing/details/cognitive-services/language-service/) for the conversational language understanding feature of Cognitive Service for Language. Then, before 1 October 2025: 1. Create a Cognitive Service for Language resource. 1. Follow the steps to [migrate](https://aka.ms/luis-migration) your LUIS applications to conversational language understanding. 1. If you use the LUIS SDK or REST APIs to query your applications, review the [documentation](https://docs.microsoft.com/en-us/azure/cognitive-services/language-service/conversational-language-understanding/how-to/call-api?tabs=language-studio#send-a-conversational-language-understanding-request) to learn how to call the conversational language understanding APIs and make the appropriate code changes. Help and support If you have questions, get answers from community experts in [Microsoft Q&A](https://aka.ms/luis-migration-qna-thread). If you have a support plan and you need technical help, create a [support request](https://portal.azure.com/#blade/Microsoft%5FAzure%5FSupport/HelpAndSupportBlade/newsupportrequest). * Language Understanding (LUIS) * Conversational language understanding * Retirements