India spent over ₹6.2 lakh crore on defence in 2026-26, and a growing share of that money now stays within the country. For UPSC aspirants, this single shift — from importing weapons to building them at home — connects two massive GS-III themes that examiners love to test together.
I have seen this topic appear in Prelims factual questions, Mains analytical essays, and even Ethics case studies. If you understand how India’s defence indigenisation journey works, you unlock answers across at least three different papers. Let me walk you through the entire chapter, from basics to exam-ready depth.
Where This Topic Sits in the UPSC Syllabus
Defence technology indigenisation is not a standalone line in the syllabus, but it sits at the intersection of two clearly mentioned areas. Understanding its placement helps you frame answers correctly.
| Exam Stage | Paper | Syllabus Section |
|---|---|---|
| Prelims | General Studies | Science and Technology — developments and their applications in everyday life |
| Mains | GS-III | Science and Technology — developments and effects; Security — linkages between development and spread of extremism; role of external state and non-state actors |
| Mains | GS-III | Indigenisation of technology and developing new technology |
| Mains | GS-II | India and its neighbourhood — relations (defence diplomacy angle) |
The phrase “indigenisation of technology” appears directly in the GS-III syllabus. Questions have appeared at least 6-8 times in the last decade, sometimes as direct questions and sometimes embedded within broader security or S&T questions.
Why India Needed Defence Indigenisation
For decades after Independence, India was one of the world’s largest arms importers. We depended heavily on the Soviet Union and later Russia for fighter jets, tanks, and submarines. This created three serious problems.
First, strategic vulnerability. When you depend on another country for weapons, that country gains leverage over your foreign policy. During the 1998 nuclear tests, several nations imposed sanctions on India. If we had been fully dependent on them for spare parts, our military readiness would have collapsed.
Second, economic drain. Every rupee spent on imported weapons leaves the Indian economy. It does not create jobs here. It does not build skills here. It does not develop our industrial base.
Third, technology denial. Countries that sell weapons rarely share the core technology. You get the finished product but not the knowledge to build or improve it. This keeps you permanently dependent.
The Institutional Framework — DRDO and Defence PSUs
The Defence Research and Development Organisation (DRDO) was established in 1958 by merging the Technical Development Establishment and the Directorate of Technical Development and Production. Today it has over 50 laboratories working on everything from missiles to combat vehicles.
Key achievements of DRDO include the Agni and Prithvi missile series, the Arjun Main Battle Tank, the LCA Tejas light combat aircraft (developed jointly with HAL), and the Airborne Early Warning and Control System (AEW&C). The late Dr. APJ Abdul Kalam led India’s missile programme under DRDO before becoming President.
Defence Public Sector Undertakings (DPSUs) like Hindustan Aeronautics Limited (HAL), Bharat Electronics Limited (BEL), and Bharat Dynamics Limited (BDL) form the manufacturing backbone. They convert DRDO’s research into production-ready systems.
Major Policy Reforms Since 2014
The Make in India initiative gave defence manufacturing a strong push. Foreign Direct Investment (FDI) limits in defence were raised — first to 49% through the automatic route, and later up to 74% under the automatic route for sectors where it results in access to modern technology.
The Defence Procurement Procedure (DPP) was replaced by the Defence Acquisition Procedure (DAP) 2020. This introduced new categories like Buy (Indian – IDDM), meaning “Indigenously Designed, Developed and Manufactured.” This category gets the highest priority in procurement.
Perhaps the most exam-relevant reform is the Positive Indigenisation Lists. The Ministry of Defence has released multiple lists — covering over 500 items — that cannot be imported after a set deadline. This forces the armed forces to source these items domestically, creating guaranteed demand for Indian manufacturers.
The government also created the iDEX (Innovations for Defence Excellence) platform. It connects startups and small companies with the defence establishment. Through iDEX, young innovators get funding and a chance to solve real military problems. This is a good example to cite in answers about innovation ecosystems.
Defence Corridors — Tamil Nadu and Uttar Pradesh
Two Defence Industrial Corridors were announced — one in Tamil Nadu (covering Chennai, Hosur, Salem, Coimbatore, and Tiruchirappalli) and one in Uttar Pradesh (covering Agra, Aligarh, Lucknow, Kanpur, Jhansi, and Chitrakoot). The idea is to cluster defence manufacturing units together so they benefit from shared infrastructure, supply chains, and a skilled workforce.
For UPSC Mains, these corridors are useful examples when writing about regional development, industrial policy, or the linkage between defence and economic growth.
BrahMos and Tejas — Two Case Studies You Must Know
The BrahMos missile is a joint venture between India’s DRDO and Russia’s NPO Mashinostroyeniya. It is a supersonic cruise missile with a range of approximately 290 km (extended versions go further). India has now started exporting BrahMos to countries like the Philippines. This is a landmark — India moved from importer to exporter.
The LCA Tejas is India’s indigenous light combat aircraft. Its journey was long and full of delays, but it is now operational with the Indian Air Force. The Tejas Mark-1A variant incorporates an Active Electronically Scanned Array (AESA) radar and improved electronic warfare capabilities. Understanding Tejas helps you discuss both achievements and challenges of indigenisation.
Challenges That Remain
India’s defence indigenisation story is not without problems. Long development cycles remain a concern — Tejas took over three decades from conception to full operational clearance. Private sector participation has increased but is still limited compared to countries like the United States or Israel.
Quality control and testing infrastructure need further strengthening. The armed forces sometimes express reluctance to adopt indigenous equipment because they perceive it as less reliable than proven imported systems. Bridging this trust gap requires consistent performance and transparent testing.
Dual-use technology restrictions imposed by multilateral export control regimes also limit India’s access to certain critical components. India’s membership in the Wassenaar Arrangement and the Missile Technology Control Regime (MTCR) has helped, but challenges persist.
Previous Year UPSC Questions on This Topic
Q1. What is the significance of developing Chabahar Port by India? (UPSC Mains 2017 — GS-III)
Answer: While Chabahar is primarily a connectivity question, UPSC has used such questions to test understanding of strategic assets. Defence indigenisation links similarly — it reduces strategic dependence. A strong answer would discuss how indigenous defence capability reduces reliance on external supply chains, just as Chabahar reduces dependence on Pakistan for access to Afghanistan and Central Asia.
Q2. What is meant by the term ‘double-use’ technology? Give examples. How does it impact India’s defence indigenisation? (Based on UPSC Mains pattern — GS-III)
Answer: Dual-use technologies are those with both civilian and military applications — for example, satellite launch vehicles (which use similar technology as ballistic missiles) and advanced computing chips. India’s membership in MTCR and Wassenaar Arrangement has eased access to some dual-use technologies. However, restrictions remain on certain high-end items. Indigenous development of dual-use technologies through DRDO and ISRO reduces vulnerability to technology denial regimes.
Q3. Consider the following statements about iDEX: 1) It is an initiative of NITI Aayog. 2) It aims to engage startups in defence innovation. Which is correct? (Prelims-style)
Answer: Only statement 2 is correct. iDEX (Innovations for Defence Excellence) is an initiative of the Ministry of Defence, not NITI Aayog. It works through the Defence Innovation Organisation (DIO) and provides grants and support to startups, MSMEs, and individual innovators working on defence-related technologies.
Key Points to Remember for UPSC
- Positive Indigenisation Lists cover 500+ items with import ban deadlines — this is the government’s demand-side push for domestic defence manufacturing.
- India has two Defence Industrial Corridors: Tamil Nadu and Uttar Pradesh — useful examples for answers on industrial policy and regional development.
- DAP 2020 replaced DPP and introduced Buy (Indian-IDDM) as the highest priority procurement category.
- BrahMos export to the Philippines marks India’s transition from arms importer to arms exporter.
- FDI in defence is allowed up to 74% via the automatic route where modern technology access is involved.
- iDEX connects startups with defence needs — cite this in answers about innovation ecosystems or startup policy.
- India’s membership in MTCR and Wassenaar Arrangement has improved access to dual-use technologies but has not eliminated all restrictions.
This topic gives you ready-made content for GS-III answers on science, technology, and security — all in one preparation effort. I would recommend making a one-page note that maps each major policy reform to its exam application. When you sit down for your next answer writing practice, try framing a 250-word answer connecting defence indigenisation to Atmanirbhar Bharat. That single exercise will solidify this chapter in your mind better than re-reading it three times.