The most striking element of Amazon’s comeback is that the United States remains excluded. Despite feeds being switched back on internationally, Amazon’s presence in Google Shopping auctions has not resumed in its home market. This raises important questions. Did the US market underperform in the test, making Amazon reluctant to restart spend there? Or is the decision part of a broader strategic shift in how Amazon approaches paid search in its largest territory?

For advertisers, the implications are significant. In Europe, the return of Amazon means renewed competition for top placements, with many retailers likely to see higher costs per click and reduced visibility in product listings. In the US, however, smaller retailers and direct-to-consumer brands may find themselves with more breathing room, enjoying lower CPCs and less competition for customer attention.

The bigger picture is that Amazon continues to experiment aggressively with its advertising strategy. As one of the world’s largest digital advertisers, its presence or absence can dramatically reshape online advertising markets. While international retailers must quickly adapt to the re-entry of a dominant competitor, US advertisers are left wondering whether Amazon’s retreat is temporary or permanent.

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For now, all eyes are on whether Amazon will bring its Google Shopping campaigns back to the United States or if this marks a new chapter in its complex relationship with Google.