How did Johann Bernhard Fischer von Erlach’s style change after studying Palladian architecture?

Following his travels to England, Holland, Prussia, and Venice in the early 18th century, Johann Bernhard Fischer von Erlach developed a new type of "Palladian" palace facade. This stylistic shift moved away from his earlier, more dynamic Roman Baroque influences toward a design that was classical in its proportions while remaining enlivened by rich, sculptural decoration.1

Key characteristics of this evolved style include:

• Structural Composition: The facade features a central projection accentuated by a giant order and topped with a triangular pediment, flanked by relatively unarticulated lateral sections.1
• Influences: His designs drew from Andrea Palladio himself, his Italian followers, and English and North German Baroque interpretations of Palladian architecture.1
• Notable Examples: This style is best represented by the facades of the Bohemian Chancellery (1708–14) and Trautson Palace (1710–16) in Vienna, as well as the Clam-Gallas Palace (begun 1713) in Prague.1

These works became highly influential, eventually being imitated by architects throughout the Habsburg empire.1