Azerbaijan, Kazakhstan, and Turkmenistan Advance Plans for Digital Corridor Across Caspian

Marine research is in progress to identify the best route for the Trans-Caspian fiber-optic cable, a key part of the ambitious “Digital Silk Way” project designed to create a high-capacity digital corridor linking Europe and Asia.

The ongoing survey, which includes shoreline assessments and detailed seabed analysis, will define the shortest, safest, and most environmentally sustainable path for the cable, The Caspian Post reports citing foreign media.

Research began simultaneously from the Azerbaijani and Kazakhstani coasts and is expected to take up to four weeks.

Emil Masimov, Chairman of AzerTelecom’s Board, visited the Turkan research vessel, where the survey is being conducted. During his visit, he reviewed the ship’s technical capabilities and met with the crew and engineering teams.

“The Trans-Caspian cable project is progressing rapidly. With the launch of this marine survey, we are entering a crucial phase of construction,” Masimov said. “This step will boost regional digital connectivity and position the Caspian Sea as a key link in global digital infrastructure. Both Azerbaijani and Kazakh teams are using cutting-edge technology and professional expertise, and I am confident the work will be completed on schedule.”

The 380-kilometer underwater cable will run from Sumgayit, Azerbaijan, to Aktau, Kazakhstan, and is expected to offer a transmission capacity of up to 400 terabits per second. Once operational, the line will significantly strengthen intercontinental data flows. Construction is scheduled to be completed by the end of 2026.

Kazakhtelecom is leading the project on the Kazakh side, while U.S.-based Pioneer Consulting is providing technical oversight and consultancy services.

The Trans-Caspian cable is a central element of the broader “Digital Silk Way” initiative, which envisions a modern telecommunications corridor passing through Azerbaijan, Georgia, Turkey, Kazakhstan, and Turkmenistan. The project aims to deliver high-speed, low-latency data routes that promote regional cooperation, digital integration, and sustainable economic development.