Discuss the significance of the Defence Acquisition Council's procurement categories in promoting indigenous defence manufacturing under Aatmanirbhar Bharat.

The Defence Acquisition Council (DAC), chaired by the Raksha Mantri, accords Acceptance of Necessity (AoN) — the first stage of capital procurement — and simultaneously assigns each proposal a procurement category under the Defence Acquisition Procedure (DAP) 2020 [3]. This categorisation is the decisive lever that converts Aatmanirbhar Bharat from policy intent into enforceable purchase conditions.

Categorisation as an instrument of indigenisation

• DAP 2020 fixes a preference order — Buy (Indian-IDDM) > Buy (Indian) > Buy & Make (Indian) > Buy (Global–Manufacture in India) — so imports become the residual, not the default [3].
• Buy (Indian-IDDM) demands indigenous design, development and manufacture with prescribed minimum indigenous content, rewarding domestic intellectual property, not mere assembly [3].
• Top categories are reserved for firms owned and controlled by resident Indians, channelling orders to DPSUs (HAL, BEL, BEML) and private manufacturers [3].

Demonstrated outcomes

• DAC clearances are now overwhelmingly domestic: proposals worth about Rs 1.10 lakh crore in September 2026 were roughly 98% earmarked for Indian industry [1], mirroring an earlier Rs 1.05 lakh crore clearance made entirely under Buy (Indian-IDDM) [2].
• Categorisation pulls in critical technologies historically imported — marine gas turbines and Arudhra radars for the Navy, CBRN reconnaissance vehicles and Advanced Light Helicopters for the Army [1].
• Aggregate effects are visible: indigenous defence production rose to about Rs 1.78 lakh crore and exports to a record Rs 38,424 crore in 2025-26, with the private sector's share climbing to nearly a quarter [4].

Limitations to note

• AoN is only in-principle approval; RFP, trials and negotiations stretch over years, so cleared value is not realised capability.
• Indigenous content is measured largely by cost share, allowing imported sub-systems and critical components to persist.

Categorisation thus works best when paired with Positive Indigenisation Lists, iDEX and DRDO-industry partnerships [4]. Tightening indigenous-content verification and compressing acquisition timelines would ensure DAC approvals translate into genuine technological sovereignty — the operational core of Aatmanirbhar Bharat in defence.