Shirofune Opens Amazon DSP with New Model of Transparency and Automation

EL SEGUNDO, Calif. – March 25, 2026 – Shirofune, a leading digital advertising automation platform from Japan, today announced an integration with Amazon DSP that could reshape how businesses of all sizes approach programmatic advertising. The partnership provides users with direct access to Amazon's vast advertising network through Shirofune's automated platform, but it's the financial and operational model that is turning heads in the ad tech industry.

By eliminating intermediary management fees and allowing advertisers to pay ad costs directly to Amazon, the integration introduces a level of transparency and cost-efficiency that challenges long-standing industry practices. This move promises to democratize access to the powerful, data-rich environment of Amazon DSP, a platform that allows advertisers to programmatically buy display, video, and audio ads across Amazon's properties like Prime Video and Fire TV, as well as on third-party websites and apps.

A New Standard for Programmatic Transparency

For years, the programmatic advertising supply chain has been criticized for its complexity and opacity, often referred to as a "black box" where hidden fees and markups can erode marketing budgets. Shirofune's integration with Amazon DSP directly confronts this issue by establishing a radically transparent operational framework.

Under this new model, advertisers who use Shirofune to manage their Amazon DSP campaigns will only pay Shirofune's standard platform usage fee. There are no additional account management fees or advertising margins. All advertising spend is paid directly from the advertiser to Amazon, providing a clear and auditable financial trail. Furthermore, advertisers retain full, open access to their accounts, ensuring complete control and security over their campaigns and data.

"This integration allows advertisers of all sizes to access advanced DSP capabilities directly,” said Mitsunaga Kikuchi, CEO and Founder of Shirofune, in the company's announcement. “Combined with Shirofune’s expertise in automated bidding optimization, this integration empowers advertisers to make high-performance programmatic advertising more accessible than ever."

This approach aligns with a growing industry-wide demand for greater accountability. Recent studies, such as the Association of National Advertisers' Programmatic Transparency Benchmark, have highlighted how access to more granular data and clearer supply paths can lead to significant improvements in ad spend efficiency. By removing layers of fees, Shirofune's model allows more of the advertiser's dollar to be spent on actual media, potentially improving return on investment.

Democratizing Access with Advanced Automation

Beyond transparency, the integration’s core value lies in its powerful automation, designed to make a sophisticated platform like Amazon DSP manageable for a broader audience. Amazon DSP's primary strength is its access to Amazon’s exclusive first-party data on consumer shopping behavior, a key differentiator from competitors like Google's Display & Video 360 or The Trade Desk. However, harnessing this power has traditionally required significant expertise.

Shirofune aims to lower this barrier to entry with its automated bidding algorithm, which has been refined over the past decade across numerous advertising platforms. The process is designed for simplicity: users specify their budget and their target Return on Ad Spend (ROAS) or Advertising Cost of Sale (ACoS). Shirofune's AI then takes over, automating the complex tasks of bid adjustments and budget allocation across line items to maximize performance. The company claims this can reduce the manual effort required for campaign management to "as close to zero as possible."

This automation makes the platform ideal not only for ongoing campaigns but also for more agile initiatives, such as short-term spot campaigns, pilot programs, or testing new strategies ahead of larger rollouts. The platform's ability to integrate with Amazon Marketing Cloud (AMC) further enhances its capabilities, allowing for advanced optimization based on metrics like predicted customer lifetime value (LTV).

Reshaping the Broader Ad Tech Landscape

The partnership between Shirofune and Amazon reflects several major trends transforming the digital advertising industry. First, it underscores the growing dominance of AI and automation. As platforms become more complex, AI is no longer a feature but the core engine driving efficiency, from smart bidding to audience forecasting. This integration is a prime example of a "human + machine partnership," where technology handles the intensive data-processing and optimization tasks, freeing up human marketers to focus on high-level strategy, creative development, and interpreting insights.

Second, it highlights the strategic expansion of "walled gardens" like Amazon. In an era defined by the decline of third-party cookies and a greater emphasis on privacy, platforms with vast stores of first-party data are king. By partnering with tools like Shirofune, Amazon makes its ecosystem more accessible and attractive, fueling the growth of its advertising empire and strengthening its competitive position.

Finally, this model may signal an evolution in the role of advertising agencies. As tools emerge that automate manual tasks and eliminate intermediary fees, agencies are incentivized to move up the value chain. Their focus can shift from the mechanics of campaign execution to providing strategic counsel, cross-platform analysis, and creative excellence—services that automation cannot fully replace. The integration empowers advertisers with more direct control, but the need for expert strategy in a fragmented digital landscape remains paramount.