CCH ProSystem fx and QuickBooks Desktop run on one dedicated private server. Sizing, isolation, speed, and IRS/FTC compliance for mid-size and larger firms.
QuickBooks and Lacerte can share one server. What matters is a dedicated, properly sized private server: sizing, isolation, speed, and IRS/FTC compliance.
QuickBooks Desktop and a tax suite like Drake, UltraTax, Lacerte, ProSeries, or CCH can share one dedicated private server. How isolation and sizing keep it fast.