Defence Research & Development Organisation (DRDO)

The Defence Research and Development Organisation, or DRDO, is the Indian government's main body for designing and developing weapons and military technology. It works under the Ministry of Defence. Its scientists create missiles, radars, aircraft systems, tanks, electronic warfare tools, and even food and clothing for soldiers in extreme climates. The aim is simple: India should be able to make its own defence equipment instead of buying it from other countries.

Why does it exist?

A country that buys all its weapons from abroad is at the mercy of the sellers. In a war or crisis, the seller can stop supplies or spare parts, or attach political conditions. Foreign weapons are also costly, and the seller often refuses to share the technology inside them. Think of it like a family that depends on one shopkeeper for all its medicines: if the shop shuts, the family is in trouble. DRDO exists to build this capacity at home, which today is called self-reliance or Aatmanirbharta in defence.

Where did it come from?

DRDO was formed in 1958. It was created by merging three bodies:

• the Technical Development Establishments (TDEs) of the Indian Army;
• the Directorate of Technical Development and Production (DTDP);
• the Defence Science Organisation (DSO), set up in 1949 to give scientific advice to the armed forces.

DRDO began small, with only 10 laboratories. In 1980, the government created a separate Department of Defence Research and Development (DDR&D) in the Ministry of Defence to run DRDO. The head of DRDO, called the Chairman, is also the Secretary of DDR&D. DRDO's headquarters is DRDO Bhawan in New Delhi, and its motto is "Balasya Mulam Vigyanam" (Sanskrit for "the source of strength is science").

The missile programme that changed DRDO

India's biggest leap came through the Integrated Guided Missile Development Programme (IGMDP), approved in 1983. It was led by Dr A.P.J. Abdul Kalam, who later became India's President and is often called the "Missile Man of India". The programme set out to build five missiles at the same time:

1. Prithvi: a short-range surface-to-surface ballistic missile
2. Agni: began as a technology demonstrator for longer ranges and grew into India's longer-range ballistic missiles
3. Trishul: a short-range surface-to-air missile (later closed)
4. Akash: a medium-range surface-to-air missile
5. Nag: an anti-tank guided missile

In January 2008, DRDO announced that the IGMDP had met its goals and would end as a single programme. After that, each missile was taken forward as its own project. The IGMDP left India with a strong base of missile labs in Hyderabad, now grouped as the Dr APJ Abdul Kalam Missile Complex. It includes the Defence Research and Development Laboratory (DRDL) and the Research Centre Imarat (RCI), which works on guidance and navigation systems.

How is DRDO organised today?

As of 2026, DRDO is a network of about 41 laboratories and 5 DRDO Young Scientist Laboratories (DYSLs), which were started in 2020 to work on future technologies such as artificial intelligence and quantum technology. The labs are grouped into technology clusters, each headed by a Director General (DG). This system started in 2013 on the advice of the Rama Rao Committee. Clusters cover areas such as:

• Aeronautical Systems
• Missiles and Strategic Systems
• Naval Systems and Materials
• Armament and Combat Engineering Systems
• Electronics and Communication Systems
• Micro Electronic Devices, Computational Systems and Cyber Security
• Soldier support and life sciences

How does DRDO turn an idea into a weapon?

Step by step:

1. The armed forces state what they need, for example "a missile that can hit targets 400 km away".
2. DRDO designs and builds prototypes (first working models) in its labs.
3. DRDO carries out developmental trials to check whether the design works.
4. The armed forces then run user evaluation trials, testing it in conditions close to real use.
5. Once the forces accept it, the system is produced in large numbers, usually by a defence company, and inducted into service.

To speed up step 5, DRDO now picks Development-cum-Production Partners (DcPPs). These are public or private companies that work with DRDO from the design stage, so they are ready to mass-produce the system. DRDO also gives its technology to industry through Transfer of Technology (ToT). Under the Technology Development Fund (TDF) scheme, run by DRDO, small firms and start-ups get grants to develop defence technology. In June 2022, the limit was raised from ₹10 crore to ₹50 crore per project.

Key achievements and test sites

DRDO's well-known work includes:

• the Agni and Prithvi missile families, and the Akash air-defence system;
• BrahMos, a supersonic cruise missile made by a joint venture of DRDO and Russia's NPO Mashinostroyeniya, formed in 1998;
• Mission Shakti (27 March 2019), India's first anti-satellite missile test;
• Mission Divyastra (11 March 2024), the first test of Agni-5 with MIRV technology, in which one missile carries several warheads that can hit different targets.

Most missile tests happen off Odisha's coast. The Integrated Test Range (ITR), Chandipur tracks them, and Dr APJ Abdul Kalam Island, earlier called Wheeler Island and renamed in 2015, is used for launching longer-range missiles.

Money

In the Union Budget 2026-27, DRDO got about ₹29,100 crore, up from about ₹26,817 crore in 2025-26. Of this, about ₹17,250 crore is capital spending (money for building and buying long-term assets). The Ministry of Defence's total allocation for 2026-27 is about ₹7.85 lakh crore. So DRDO receives less than 4% of the defence budget.

Commonly confused concepts

• DRDO vs DPSUs: DRDO designs and develops. Defence Public Sector Undertakings (DPSUs) such as Bharat Dynamics Limited (BDL), Hindustan Aeronautics Limited (HAL) and Bharat Electronics Limited (BEL) manufacture in large numbers. For Pralay, DRDO's RCI designed it and BDL produced it.
• DRDO vs ISRO: ISRO (under the Department of Space) builds rockets and satellites for peaceful uses. DRDO (under the Ministry of Defence) builds weapons and military systems. They share some technologies, such as solid rocket motors.
• DDR&D vs DDP: The Department of Defence R&D runs DRDO. The Department of Defence Production (DDP) looks after defence manufacturing, DPSUs and schemes like iDEX (Innovations for Defence Excellence).
• Developmental trials vs user evaluation trials: Developmental trials are DRDO's own tests to prove the design. User trials are done with, and for, the armed forces before they accept the weapon.

Issues, criticism and the way forward

• Delays and cost overruns: Some major projects took far longer than planned. Examples are the Tejas light combat aircraft, the Arjun tank and the Kaveri jet engine. The Comptroller and Auditor General (CAG) and Parliament's Standing Committee on Defence have raised these problems in their reports.
• Low R&D spending: India spends a small share of its defence budget on research compared with leading military powers. By SIPRI data, India remains one of the world's largest arms importers.
• Doing too much: Critics say DRDO spreads itself across too many projects and spends effort on production work instead of cutting-edge research.
• Reforms: In August 2023, the Ministry of Defence set up a committee headed by K. VijayRaghavan, former Principal Scientific Adviser, to review DRDO. Its reported recommendations include:
• DRDO should focus on core research, not production;
• its many labs should be grouped into fewer national labs;
• a high-level Defence Technology Council should guide defence technology;
• private industry and start-ups should play a much bigger role.
• Way forward: Experts suggest clear timelines, early involvement of industry and the armed forces, more funding for basic research, and closer links with universities and start-ups.

Concepts to Know

• Indigenous: Made in one's own country, using its own designs and technology.
• Prototype: The first working model of a new machine or weapon, built to test the design before mass production.
• Induction: The formal acceptance of a weapon or system into the armed forces for regular use.
• Transfer of Technology (ToT): When the owner of a technology shares its designs and know-how so that another company can make the product.
• MIRV (Multiple Independently targetable Re-entry Vehicle): A system that lets one missile carry several warheads, each able to hit a different target.
• Anti-satellite (ASAT) missile: A missile that can destroy a satellite in space.
• SIPRI: The Stockholm International Peace Research Institute, a Swedish research body that tracks world military spending and arms trade.