Vietnam's $400M MViSTA Cable Ties Subsea Capacity to 300-MW AI Campus Plan

MViSTA subsea cable positions Vietnam as AI infrastructure contender

Stavian High Tech Infrastructure is expected to select either NEC or Alcatel Submarine Networks later in October 2026 to build MViSTA, a planned 2,500-km subsea cable connecting Malaysia, Vietnam, Singapore and Thailand. The proposed system would use 16 fiber pairs, cost approximately $400 million, and target service entry in late 2028.

The cable is designed to serve Stavian Digital Park, a proposed 300-hectare, carrier-neutral data-center campus near Ho Chi Minh City. The campus roadmap targets 300 MW of Phase 1 power capacity by 2030 and up to 200 Tb/s of international subsea connectivity. The $400 million cable budget indicates that route diversity and direct international connectivity have become material cost factors in Southeast Asian data-center site economics.

Cloud and AI operators evaluating Vietnam gain a potential advantage: a carrier-neutral campus with an explicit international-connectivity roadmap. But procurement teams should not treat MViSTA as available capacity before 2028. The project remains proposed, vendor selection was pending as of the reporting date, and the 200-Tb/s figure applies to the campus plan, not verified MViSTA throughput. Buyers should require binding commitments on landing stations, initial lit capacity, restoration paths, latency to Singapore, and allocation rights before assigning resilience or latency value to the project.

MViSTA would add capacity alongside existing and planned Southeast Asian cables serving the same markets. It competes indirectly with terrestrial routes through China and other regional subsea systems. The reported figures establish cable length, fiber-pair count and estimated cost, but not actual designed or initially lit transmission capacity.

Trans-Caspian cable activates 380-km route between Kazakhstan and Azerbaijan

The Trans-Caspian Fiber-Optic Cable System, also called CaspiLink, was inaugurated on October 15, 2026. The 380-km system spans the Caspian Sea between Aktau, Kazakhstan, and Sumgayit, Azerbaijan, and is described as the first international public telecommunications subsea cable installed in the Caspian Sea. The system claims more than 400 Tb/s of design capacity.

CaspiLink forms part of the Trans-Caspian International Transport Route, or Middle Corridor, which connects Central Asia with the South Caucasus and onward European networks. It gives carriers and large network users an alternative to routes that depend more heavily on Russia or other established Eurasian corridors.

Multinational companies operating in Central Asia can evaluate a new geographic-diversity option for cloud access, disaster recovery and interregional traffic. Financial-services, government and critical-infrastructure buyers may value reduced dependence on a single geopolitical corridor, but should validate route ownership, landing-station redundancy and repair arrangements. The route could improve the business case for data-center and cloud deployments in Kazakhstan and Azerbaijan, although actual enterprise value depends on carrier participation, pricing and cross-border service availability.

The reported 400 Tb/s is a design figure, not evidence that capacity is already lit, sold or available to enterprise customers. Buyers should request committed capacity, latency measurements, service-level agreements and protection-route details rather than relying on headline design capacity.

Prysmian doubles Nordenham subsea cable manufacturing capacity

Prysmian, through its recently acquired Xtera subsea telecom business and an 80%-owned joint venture with Fincantieri, is doubling submarine-telecommunications cable manufacturing capacity at its Nordenham, Germany facility. The capacity expansion is positioned around demand from AI, cloud computing and data-center growth.

Xtera has been selected for EXA Infrastructure's 6,552-km EXA Meridian transatlantic cable, scheduled to enter service in 2029. The cable is expected to be manufactured at Nordenham. Prysmian and Xtera compete with NEC and Alcatel Submarine Networks in submarine systems, as well as other cable and wet-plant suppliers.

Large cloud and data-center operators planning private or consortium-backed subsea systems may gain another source of manufacturing capacity, potentially improving schedule confidence. But the development does not provide a new price, production-volume figure or customer capacity allocation, so its immediate budget impact is less measurable than a completed cable activation. Buyers should still compare delivery schedules, repair-vessel access, spare-cable policies and supplier concentration. Manufacturing expansion does not eliminate marine installation or geopolitical risks.

What to watch

MViSTA is the most commercially consequential proposed development because it combines a quantified $400 million, 2,500-km, 16-fiber-pair cable with a planned 300-MW Vietnam data-center campus. CaspiLink is the more immediately actionable development because it has been inaugurated and introduces a new 380-km route across the Caspian with design capacity above 400 Tb/s. Neither headline capacity figure should be treated as equivalent to contracted, lit enterprise bandwidth.

Cloud, AI and data-center buyers should request verifiable capacity commitments, latency measurements, restoration-route details and allocation rights before incorporating either system into resilience or latency planning. The MViSTA vendor selection, expected later in October 2026, will clarify delivery risk and system specifications. CaspiLink buyers should validate carrier participation, cross-border service availability and actual lit capacity before treating the route as an operational alternative to existing Eurasian corridors.