Thank you for your question.
Based on the documentation, Azure Custom Vision service is still an active product offered by Azure and there are no updates of it being retired anytime soon. However, Azure Image Analysis 4.0 now supports custom models with few-shot learning capability and is a separate offering from Azure Custom Vision. You can migrate an existing Azure Custom Vision project to the new Image Analysis 4.0 system using a Python script to take all of the training data from an existing Custom Vision project (images and their label data) and convert it to a COCO file. You can then import the COCO file into Vision Studio to train a custom Image Analysis model. See the migration guide for more information.
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