The Australian internet advertising market has continued to grow, reaching $4.2bn for the March 2025 quarter, an increase of 11.6% year on year.  The data which comes from the IAB Australia Internet Advertising Revenue Report (IARR) released today, also showed that the local market experienced a much softer than usual seasonal decline in spend from the December quarter at -1.8% in 2025 versus -4.2% in 2024.