ReportSensor Tower
Digital Marketing Index Report: Q4 2025
1 Oct 202556 pages~57 min full read
India was the only major global market to record positive overall digital marketing growth in Q4 2025, while other leading economies experienced stagnation or decline.
Generative AI referrals surged by 133% year-over-year in the US, UK, and France, signaling their emergence as significant discovery engines despite currently accounting for less than 1% of total traffic.
US retail-media impressions grew 13% quarter-over-quarter to 123 billion, with Amazon capturing the entire volume and delivering six times the impressions of Walmart.
Traditional organic search was the only major acquisition channel to decline in Q4 2025, falling 4% year-over-year.
Digital marketing strategies are shifting toward paid advertising and AI-augmented pathways as legacy search channels lose market share in mature economies.
The analysis evaluates global digital‑marketing dynamics for the final quarter of 2025, emphasizing shifts in channel performance, the rise of generative‑AI as a discovery source, and the concentration of retail‑media reach among dominant platforms. Growth patterns reveal a stark regional divide: India stands alone among the five largest markets as the only one posting positive overall change, while other leading economies recorded declines or stagnation.
In the United States, retail‑media impressions expanded 13 percent quarter‑over‑quarter to reach 123 billion, with Amazon accounting for the entire volume and delivering more than six times the impressions generated by Walmart. This concentration underscores Amazon’s expanding role as the primary conduit for retail‑media exposure in North America. Across the same period, generative‑AI referrals, although still representing less than one percent of total traffic, surged dramatically—up 133 percent year‑over‑year in the United States, United Kingdom and France, and 126 percent in Canada. The rapid acceleration signals that chat‑based assistants such as ChatGPT, Claude and Gemini are emerging as significant discovery engines despite their modest share of overall visits.
Conversely, traditional organic search experienced the only decline among major acquisition channels, falling four percent year‑over‑year. Paid advertising, email marketing and other performance‑driven tactics continued to post gains, reinforcing a broader transition toward paid and AI‑augmented pathways for user acquisition. The findings collectively illustrate a digital‑marketing ecosystem increasingly dominated by platform‑centric retail media and AI‑driven referral mechanisms, while legacy search channels lose ground in mature markets.
