@Pey Ling Ng Are you referring to OCR skill from cognitive search?
From the perspective of form recognizer, it is a complete service offered by Azure AI which is used to extract text from documents of different formats with some prebuilt ML models and custom models. This ensures, the documents are analyzed to extract text that can be used by applications to process data. It uses OCR techniques to extract data and presents them with pre-defined labels that can be consumed easily by users. The availability of its own portal also helps users to develop their own models with minimal effort and use them with other MS services to build no-code applications that can read documents. I hope this helps!!
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