This article examines the technology-security nexus between Kazakhstan and South Korea within the context of artificial intelligence (AI) infrastructure, semiconductor supply chains, and digital sovereignty. The study argues that the expansion of bilateral cooperation reflects a broader adaptive strategy of middle powers operating under conditions of technological bipolarization. The article introduces the concept of 'digital multi-vectoralism' — a strategy of strategic diversification of technological partnerships aimed at reducing dependence on any single digital ecosystem. Combining a realist analytical framework with global value chain (GVC) analysis, the article assesses Kazakhstan's pivot from a resource-dependent economy toward computational sovereignty and South Korea's role as a comparatively flexible technological partner. The findings suggest that the AI Silk Road may serve as an alternative model of middle-power diplomacy in Eurasia.