Why was "SQL+ColdFusion and some ASPX" selected as the replacement stack?
The ASPX taxing/assessment system is the slow one in comparison when it comes to calculating. The ColdFusion system is not as hindered but its used for making letters and reports, exporting layers to GIS, and generally replacing COBOL-screens for information retrieval.
Is/are there better solutions, yes, but I was giving an example rather than critiquing the County’s choice of software that happened well before I came along.