MSIX AppAttach support so far has only made its way to Azure Virtual Desktop.
There would be benefit for organisations using MECM and on premise VDI solutions if MECM had support for MSIX AppAttach.
This would improve the delivery time in MSIX applications to users of those non persistent VDI's as MECM would not need to download the software first and reduce storage requirements as apps can be hosted on and stream from a DP rather than consume storage on a VDI's differencing disk.