Private subsea cable operator FLAG has invested in two cable systems to give itself four diverse routing paths into Mumbai, with new capacity between Mumbai and Singapore becoming commercially available this October.

FLAG announced on Tuesday that it signed an agreement with Orient Lines (OLL), owner of the MIST cable system — the name stands for Myanmar/Malaysia India Singapore Transit — to add capacity on the Mumbai-Singapore leg. That capacity reaches the commercial market in October this year.

The company has also contracted with Lightstorm, one of the investors in the I-2SEA (India-Southeast Asia) cable system, to lease a fibre pair connecting Machilipatnam, Chennai and Singapore. As part of that deal, FLAG is investing in the terrestrial segments between Mumbai and Chennai, extending its infrastructure footprint within India.

The two systems sit on very different timelines. MIST has been in operation since 2024. I-2SEA is not slated to be ready for service until 2029, which means FLAG's fourth diverse path into Mumbai arrives only after a four-year wait.

Building on recent deals

The MIST and I-2SEA investments extend a run of recent network deals by FLAG. At the end of last year the company invested in a fibre pair on the Echo Trans-Pacific system. This past June it launched a new subsea route between Chennai and Singapore.

FLAG CEO Paul Abfalter framed the latest investments as part of the company's previously announced Vision 2030 strategy. That plan aims to expand critical fibre infrastructure, increase capacity and give customers more resilient connectivity options across key international markets — demand drivers FLAG ties to growing enterprise, cloud and AI-driven data traffic.

"We are focused on expanding our network reach and becoming the provider of choice for customers requiring long haul connectivity in the Indo-Pacific region," Abfalter said in a statement. "Following on from our success of our existing India-Singapore India Asia Express investment, these new investments will provide four diverse paths to Mumbai."

Why route diversity matters

For carriers and cloud providers, multiple physically diverse paths into a single landing market reduce the risk that a cable cut or landing station failure severs connectivity altogether. Mumbai is India's dominant subsea gateway, and competition among operators to offer resilient India-Singapore and India-Southeast Asia routing has intensified as cloud regions and AI workloads multiply across the Indo-Pacific.

FLAG's approach mixes owned assets with leased fibre pairs. The MIST deal buys capacity on a system already carrying traffic, giving FLAG a near-term commercial product from October. The I-2SEA lease secures a dedicated fibre pair — Machilipatnam, Chennai and Singapore — on a cable that will not enter service until 2029, and pairs it with terrestrial backhaul investment between Mumbai and Chennai to tie the new southern landing points into its existing network.

The strategy effectively hedges both time horizons: immediate capacity sale on an operational cable, and long-term exclusivity of a fibre pair on a new build. It also positions Machilipatnam, a less congested landing point than Mumbai or Chennai, as part of a diversified entry architecture into India.

With the October commercial launch of MIST-sourced capacity between Mumbai and Singapore, customers will get the first tangible output of the Vision 2030 plan in the India corridor, while the full four-path diversity Abfalter describes completes only when I-2SEA enters service in 2029.