Migrate Bing Maps Distance Matrix to Azure Maps Route Matrix

Hello,

You can always refer to the API specification document for supported parameters and samples.
Route - Post Route Matrix Sync - REST API (Azure Maps) | Microsoft Learn

Here is a sample to make a post synchronous call to Route Matrix.
POST https://atlas.microsoft.com/route/matrix/sync/json?api-version=1.0&routeType=shortest

{
    "origins": {
        "type": "MultiPoint",
        "coordinates": [
            [
                4.85106,
                52.36006
            ],
            [
                4.85056,
                52.36187
            ]
        ]
    },
    "destinations": {
        "type": "MultiPoint",
        "coordinates": [
            [
                4.85003,
                52.36241
            ],
            [
                13.42937,
                52.50931
            ]
        ]
    }
}

We have released a new version of the Route Matrix API that can support up to 50k matrix size in a single API call.
Route - Post Route Matrix Async - REST API (Azure Maps) | Microsoft Learn

Summary of the latest stable and preview releases for Azure Maps rest APIs.

Links to the Azure Maps Rest API - Microsoft Azure Maps | Microsoft Learn