Most "RAG over PDFs" pipelines have a step nobody talks about much: something has to turn a scanned invoice, a multi-column contract, or a photographed receipt into text a model can actually reason over. On Microsoft's stack, that something is usually the Document Intelligence SDK, formerly Form...
Source: [Dev.to](https://dev.to/jubinsoni/a-deep-dive-into-the-microsoft-foundry-document-intelligence-sdk-from-pdf-to-structured-data-1mc8)