Armenia had the Buk, Tor, and S-300 systems during the N-K war of 2020. Yet those have largely failed to stop the Azeri drones. Akash is a downgrade over those systems. It's a procurement choice that makes little sense.
So why does Armenia suddenly prefer to buy weapons from India? I suspect that it's because Armenia under Pashinyan today hates Russia, so it won't buy anything from Russia. It is pro-West, but cannot afford expensive NATO weaponry. It won't buy from China, because it is pro-West. It won't buy from South Korea and Israel because they are selling weapons to Azerbaijan and Turkey, the arch enemies. So the only option left for Armenia that is both relatively affordable, and politically acceptable is Indian weaponry. Since tensions between Armenia and Azerbaijan is still quite hot, I think Armenia's Indian weaponry could see action sooner than expected. Then we shall see if these weapons can live up to the Jai Hind hype. I do not have high expectations.
The technology level of the Akash missile projectile is basically 70’s level since it is the predecessor the Buk, Kub. I’m sure the electronics have been upgraded, but its interesting to see that Armenia doesn’t have many better options