The Australian internet advertising market has continued to grow, reaching $4.6bn for the September 2025 quarter, an increase of 9.7% on the September 2024 quarter which had been buoyed by the Summer Olympics.  The data which comes from the IAB Australia Internet Advertising Revenue Report (IARR) released today, also showed the local market remained flat relative to the June 2025 quarter which had experienced elevated Federal Election advertising spend.