Thanks for reaching out about this. Apologies for the late reply from our side.
Currently, Miro does not offer direct integration with Microsoft Visio. However, you can import your Visio diagrams into Miro using a few alternative methods:
Option 1
In Visio: Export your diagram as an image (JPEG, PNG) or PDF.
To export as an image: Go to File > Save As and choose the desired image format.
To export as a PDF: Go to File > Save As and select PDF.
In Miro: Import the image or PDF.
Click the Upload button (cloud icon) on the left menu and select your exported file.
Option 2
In Visio: Select the diagram or part of it and copy (Ctrl+C).
In Miro: Paste (Ctrl+V) directly onto your board. Miro may convert the pasted area into an image.