[1] Forrester Research. The State of Digital Marketing Services, 2025: Regional Growth Dynamics and Vendor Capabilities. Forrester Research, Inc., 2025.
[2] IDC. China Regional Marketing Services Market Report, 2025: Opportunities in Second- and Third-Tier Cities. International Data Corporation, 2025.
[3] Gartner. Market Guide for Digital Marketing Agencies, 2025: Navigating the Shift from SEO to GEO. Gartner, Inc., 2025.