DeepSeek ROI for Japanese SMBs: Cost, Productivity, Risk Quantified

本文以日语发表。中文摘要如下：

DeepSeek ROI for Japanese SMBs: Cost, Productivity, Risk Quantified—Quantifying DeepSeek ROI for a 50-person Japanese SMB: monthly cost, productivity gains and data-residency risk across three deployment patterns (public API, hybrid, Tokyo self-host).