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21 August 2024 at 10:20:16 am

From Concrete to Compute

How SN Subrahmanyan Is Shaping L&T's AI Future For more than eight decades, Larsen & Toubro (L&T) has been synonymous with India's physical infrastructure, delivering metro systems, airports, power plants and some of the country's most complex engineering projects. Under L&T Chairman SN Subrahmanyan, however, the company's definition of infrastructure is expanding. Increasingly, it includes artificial intelligence, cloud computing, data centres and sovereign digital infrastructure the...

From Concrete to Compute

How SN Subrahmanyan Is Shaping L&T's AI Future For more than eight decades, Larsen & Toubro (L&T) has been synonymous with India's physical infrastructure, delivering metro systems, airports, power plants and some of the country's most complex engineering projects. Under L&T Chairman SN Subrahmanyan, however, the company's definition of infrastructure is expanding. Increasingly, it includes artificial intelligence, cloud computing, data centres and sovereign digital infrastructure the building blocks of India's next phase of economic growth. That shift came into sharp focus at the India AI Impact Summit 2026, where SN Subrahmanyan joined NVIDIA founder Jensen Huang to unveil a strategic collaboration aimed at accelerating AI infrastructure in India. The announcement reflected more than a technology partnership; it signalled L&T's ambition to evolve from a builder of physical assets into an enabler of the country's AI-powered future. An Engineer's Perspective on AI Unlike many business leaders who entered the AI conversation as the technology gained mainstream attention, SN Subrahmanyan approaches it through the lens of an engineer. A civil engineering graduate, he joined L&T in 1984 as a project planning engineer and spent four decades leading some of the company's largest infrastructure businesses across India and the Middle East, including projects such as the Riyadh Metro, Doha Metro and Salalah Airport. After serving as Chief Executive Officer and Managing Director from 2017, he became Chairman and Managing Director in 2023. That experience continues to shape his leadership philosophy. Rather than viewing AI as a standalone technology trend, Subrahmanyan sees it as an extension of engineering one that can improve planning, design, execution and operations at scale. During L&T's FY2024 Annual General Meeting, he described generative AI as a "game changer" and outlined how the company was embedding it across the project lifecycle to improve productivity and decision-making. Why L&T Is Investing in AI Infrastructure For L&T Chairman SN Subrahmanyan, AI is not only about adopting intelligent software; it is about building the infrastructure that makes large-scale AI deployment possible. Through its collaboration with NVIDIA, L&T plans to develop one of India's largest proposed AI infrastructure ecosystems. The first phase includes expanding GPU capacity at its Chennai campus to approximately 30 megawatts while developing a 40-megawatt AI-ready data centre in Mumbai. The infrastructure is intended to support hyperscalers, enterprises, research institutions and government organisations building AI applications across manufacturing, healthcare, financial services, energy and the public sector. The initiative aligns with Lakshya 2031, L&T's long-term growth strategy, which identifies digital infrastructure, cloud services and artificial intelligence as key growth engines. Alongside expanding AI-ready data centres, the company has strengthened its technology portfolio through investments such as its strategic stake in E2E Networks while leveraging businesses including LTIMindtree and L&T Technology Services to create an integrated digital ecosystem. As governments worldwide race to build sovereign AI capabilities, companies that control compute infrastructure rather than just software are expected to occupy a strategic position in the AI value chain. L&T's investment signals that India's AI ambitions extend beyond developing models to building the physical and digital infrastructure required to run them at scale. Building India's AI Backbone Subrahmanyan has consistently argued that AI requires more than algorithms it requires infrastructure. As enterprises move from experimentation to production-scale AI, access to secure compute, cloud platforms and data infrastructure is becoming as critical as traditional industrial assets. This philosophy reflects a broader global trend. Countries are increasingly investing in sovereign AI capabilities to reduce dependence on overseas infrastructure and strengthen digital resilience. L&T's strategy positions the company to participate in this transformation by combining its expertise in large-scale infrastructure delivery with emerging AI technologies. For an engineering company known for constructing roads, ports and industrial facilities, building digital infrastructure is a natural evolution rather than a departure from its core strengths. Leadership Beyond Technology Despite leading one of India's most significant AI infrastructure initiatives, SN Subrahmanyan has consistently maintained that technology alone cannot drive transformation. In L&T's FY2025 Annual Report, he emphasised that while AI is accelerating innovation, long-term value will continue to depend on human judgment, responsible deployment and disciplined execution. That balanced perspective reflects the leadership approach that has defined his career. Rather than pursuing technology for its own sake, he has focused on integrating new capabilities into L&T's long-standing engineering excellence and execution discipline. From Concrete to Compute As industries become increasingly digital, infrastructure itself is being redefined. The assets powering future economies will include not only highways, airports and power plants, but also AI factories, cloud platforms, GPU clusters and data centres. Under SN Subrahmanyan's leadership, L&T is positioning itself at the intersection of these two worlds. The company's strategy is not about replacing concrete with compute; it is about recognising that tomorrow's infrastructure will combine both. If that vision succeeds, L&T Chairman SN Subrahmanyan may be remembered not only for leading one of India's largest engineering companies but also for helping build the digital foundations of the country's AI economy.

Once Upon a Time in Mumbai

William Henry Sleeman (1788-1856) was the greatest crime buster in Indian history who ended the “Thugh” menace by 1848. He did not do this through modern police ‘encounters.’ As I show in my book ‘Keeping India Safe’ (2017,) Sleeman achieved his goals through legal means, by a pan-India crime investigation and court trials.


Between 1826 and 1848 Sleeman prosecuted 4,500 thugs of whom 504 were given death sentences. More than 3000 were given life term. Most of them were sent to the penal colonies in Malaya. Only 250 were acquitted.


The Guinness Book of Records once claimed thugs were responsible for 2 million deaths between 1550 and 1840; the historian Mike Dash, in his 2004 book Thug, suggests a figure closer to 50,000–100,000. Either way, Sleeman’s campaign ranks among the greatest policing feats in history.


The pity is that Sleeman’s works, and his method of investigation are not taught in Indian police schools. Yet his methods are little studied in Indian police academies, perhaps because he never wrote a systematic manual, his insights scattered across memoirs like the two-volume ‘Rambles and Reflections of an Indian Official’ (1844).


Likewise, I am not aware whether any Maharashtra police official had written authoritative accounts about those dark days, when Mumbai was reeling under underworld terror by way of kidnapping, extortion, killings and gang warfare.


That gap is now filled by ‘The Brahmastra Unleashed,’ a new book by senior police officer D. Sivanandhan, one of the architects of the Maharashtra Control of Organised Crime Act (MCOCA), unveiled in 1999.


Like Sleeman, the then Mumbai police Commissioner R.H. Mendonca and his chief strategist Sivanandhan, who was then Joint Commissioner (Crime) conceived the idea of creating a ‘Brahmastra’ in form of a new law called ‘Maharashtra Control of Organised Crime Act’ (MCOCA) for their offensive against the Mumbai underworld rather than resorting to the highly controversial ‘encounters.’


In this process they were helped by Chief Minister Manohar Joshi, Deputy CM Gopinath Munde, Additional Chief Secretary Karun Shrivastava, Law Secretary Ms. Pratima Umarji and the late S.S. Puri, Additional Director General of Police. The author says: “The basic essence of the law was that it would be very difficult for the police to book a person under MCOCA, but once booked, it would be extremely difficult for the person to come out of it.”


The backdrop was grim. In October 1998 a spree of killings claimed 12 businessmen in 15 days. This trend started when Bharat Shah, owner of ‘Roopam’ in Crawford Market sited near the office of the Police Commissioner was shot dead in broad daylight. This was followed by the killings of two brothers running a café in Bhandup on 13 October and another three businessmen on October 18.


This triggered panic among Mumbai’s traders, who, in a meeting which included Joshi, Munde, Mumbai Police Commissioner R.H. Mendonca and the author threatened to abandon the city unless order was restored. Sivanandhan recalls the moment vividly: “Little did anyone know that this peculiar gathering…would permanently alter the history of Mumbai city… I realised that the special task the government had chosen me for was to end the menace of the Mumbai underworld and free the city and its people from the clutches of crime and terror.”


What follows in the book is a vivid account of how organised crime was then committed in the city by cartels and how it resembled a ‘corporate-like’ structure under a project manager who juxtaposed advance intelligence on special projects (killings) with methodical plans on recruitment, training, funding and procurement of weaponry. Allied matters like getaways, medical treatment of the injured and legal aid to those arrested were also planned.


The author’s account of the various gangs that operated in Mumbai reads like the best-sellers on Chicago gangsters, Al Capone and John Dillinger. He gives statistical details of the police work during this period which will be of great use to researchers. There is also a separate chapter on the provisions of the new law while another one analyses how MCOCA was successfully applied in specific cases.


By the early 2000s, shootouts had become negligible. To quote the author: “The fact that there were negligible shootouts from 2003 till date reveals a clear picture of how the Mumbai Police’s MCOCA-its Brahmastra -wiped out the entire underworld in one clean sweep.”

(The reviewer is a former Special Secretary, Cabinet Secretariat. His latest book is ‘India and China at odds in the Asian Century.’)

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