Yes: 12 cables land here
SEACOM
SEA-ME-WE-4
SEA-ME-WE 3
EIG
I-ME-WE
FLAG Europe Asia (FEA)
FLAG Alcatel-Lucent Optical Network (FALCON)
Gulf Bridge International
BBG (Bay of Bengal Gateway)
SEA-ME-WE-5
MENA
AAE-1 (Asia Africa Europe)
The users are in every building all over the country and the world - which makes the datacenters best positioned at the junctions and interchanges of global wiring.
Also power, yes Tamilnadu does lead the country with power generation but Maharashtra comes close second with better power distribution backed by top private sectors in the industry.
>> Tamilnadu does lead the country with power generation but Maharashtra comes close second with better power distribution
As of November 2015, Maharashtra had 38 Gigawatts of generation to Tamil Nadu's 23 [1]. Maharashtra and Gujarat jointly produce a quarter of India's 100 GW; Tamil Nadu 8%.
Mumbai and Chennai are coastal cities with cable landings, but Mumbai is the finance and media capital - it has the stock exchange and Bollywood, both of whom I imagine will be big customers. And a bigger population as well.
Not exactly Bollywood, but VFX outsourcing is big in India. From low-cost animation (think animation for kids' TV) to top TV drama like Game of Thrones to Hollywood blockbusters like Interstellar and Doctor Strange -- they all use outsourcing and most of these companies are in Bombay.
Datacenter staffing in the cloud is fairly easy; only about 6 or so are needed on-prem for HVAC and hands-on. The rest are remote. Many cloud datacenters are able to be located in extremely obscure locations because of this.
https://www.cablemap.info/