Usage patterns
〈事〉が好調だfor something (business, performance, etc.) to be going well
This year's sales are doing well.
好調を維持するto maintain good form/momentum
The team has maintained good form since the season opener.
好調な出だしa strong/promising start
The new product got off to a promising start.
〈事〉が好調に推移するfor something to trend favorably over time
Business performance has been trending favorably.