IAF's Software Development Institute teams up with IIT Madras and IITM Pravartak to build an indigenous secure airborne communication system

The Indian Air Force has taken another step towards building the communication backbone of its aircraft at home. On 6 November 2026, the IAF's Software Development Institute (SDI) in Bengaluru signed a Memorandum of Agreement (MoA) with IIT Madras and IITM Pravartak Technologies Foundation to jointly design and develop an indigenous digital communication system for airborne applications, according to a release from the Press Information Bureau.

What was signed

The agreement was signed by Air Vice Marshal Sarabjit Singh, Commandant of SDI, and Dr M J Shankar Raman, Chief Executive Officer of IITM Pravartak, in the presence of Prof V Kamakoti, Director of IIT Madras. Under the MoA, the partners will work together on advanced algorithms for communication systems and networking.

The stated purpose is twofold: to reduce the Air Force's dependence on imported technologies and to improve its operational efficiency. The government has framed the project as part of the Atmanirbhar Bharat push in defence. No financial terms, delivery timeline or platform-level details have been disclosed.

Building on a 2025 partnership

The MoA does not come out of nowhere. Several outlets reported in late December 2025 that SDI and IIT Madras, together with IITM Pravartak, had signed an earlier memorandum of understanding covering advanced algorithms for networking and encryption. That agreement was signed by the then Commandant of SDI, Air Vice Marshal R Guruhari, along with Prof Kamakoti and Dr Shankar Raman.

Coverage of that first agreement listed the priorities the partners had in mind: advanced encryption protocols, secure data transmission, resilience against threats, scalability for airborne networks and integration with existing defence systems. The work was expected to produce deployable prototypes. The November 2026 MoA appears to formalise and extend that cooperation into a joint design-and-development programme.

Why airborne communication matters

Modern air operations depend as much on data as on aircraft. Fighters, transport planes, airborne early-warning aircraft, helicopters and drones all need to exchange voice and data with each other and with ground stations, and they need to do so securely and reliably in the face of jamming and interception. The software and algorithms that run these links, including how data is encrypted and how networks route traffic between moving nodes, are among the most sensitive parts of any air force's equipment.

Relying on imported systems for this layer creates two problems. The first is supply: spares, upgrades and integration with new platforms depend on foreign vendors and their governments. The second is trust: when the core algorithms are designed abroad, a user has limited visibility into how they work. Designing the stack in India addresses both, which is why the PIB release puts the emphasis on reducing import dependence.

The role of each partner

The Software Development Institute is the IAF's in-house software organisation, which gives the service a technical team that can define requirements and work alongside developers rather than simply buying a finished product.

IIT Madras brings research depth in communications and networking. IITM Pravartak Technologies Foundation is a Section 8 company hosted by the institute that serves as a Technology Innovation Hub under the government's National Mission on Interdisciplinary Cyber-Physical Systems, with a focus on sensors, networking, actuators and control systems. It has been the vehicle through which IIT Madras takes applied work towards deployment, which makes it a natural partner for a project meant to end in a fielded system rather than a research paper.

How it fits the wider picture

The agreement is part of a broader pattern in which India's armed forces are turning to academic institutions and start-ups for technologies they once imported. Over the past year the services have signed a series of development agreements with IITs and with companies backed through the iDEX innovation programme, covering areas from drones to secure communications.

For the IAF, a home-grown secure airborne communication system would be a foundational capability. A successful development programme could make upgrades easier to control domestically. The release does not identify aircraft or integration commitments.

What to watch

The key questions now are timelines and scale. The agreement does not say when prototypes will be ready, which platforms they will be tested on, or how the eventual system will be manufactured. As the programme moves from algorithms to hardware and flight trials, those details will show whether this partnership can deliver a system the Air Force puts into service.

Sources

• PIB: IAF's SDI, IIT Madras and IITM Pravartak Technologies Foundation sign MoA for indigenous digital secure communication system for airborne applications
• idrw.org: IAF partners IIT Madras to develop secure airborne communication system
• Indian Masterminds: Indian Air Force signs agreement to develop indigenous secure airborne communication system
• India Strategic: IAF's Software Development Institute, Bengaluru signs MoU with IIT Madras
• Careers360: IIT Madras, IAF sign MoU to develop indigenous airborne digital communication system
• https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=2333748&lang=2&reg=48