Does India have a domestic project in this area?
Yes, we do.
Please ignore the flame-baiter here who responded to you earlier.
It is called
Pradyumna Missile Defense System (PMDS). The reason why S-400 was ordered was because of the immediate requirement till our trials were complete and productions begin. Long story, short, the PMDS consists of two different sub-systems called the PAD-1 and AAD-1. PAD-1 is for targeting endo-atmospheric targets, including ballistic missiles, while the AAD-1 is an exo-atmospheric advanced missile shield.
The interceptor tests were completed by mid-2021 and production has already started. In addition to the PMDS, India has a multi-layered air defense system that is a mix between domestic SAM systems like short-range
Akash, mid-range
Akash-NG, the India-Israel JV missile
LR-SAM/Barak system, as well as outright purchased systems such as the Israeli
SPYDER system. The S-400 will be a complement to this on the borders.
Furthermore, the latest layer being created is using the base platform of the indigenous
Astra BVRAAM system (Mk1 already inducted, Mk2 being finalized now). This is a concept borrowed from the idea of SPYDER that uses Python-5 BVRAAMs as a tech base and modifies the missile to become air defense missiles. The Astra-based system will be a long-range air defense version, complementing a space between S-400 and the PMDS.
The problem is, much of the project is a confidential one so the blow-by-blow details are not easily available much like the AMCA stealth fighter or the long-range UCAV projects in India. S-400s were more or less a stopgap after our skirmish in Doklam (the tri-junction between Bhutan, India & China) way back in 2017. The order to get S-400 was placed in 2018 during the inter-governmental summit between India and Russia.
AKASH in the service..... AKASH NG under development, AAD AND PAD expected by 2025...
AAD/PAD (PMDS collectively) is expected to join much before that. Trials are already done by some reports and should start inductions by 2022-end/2023-start.