If e-voting is currently being used, what type(s) of technology used? - India

Country: 
India
Question: 
If e-voting is currently being used, what type(s) of technology used?
Answer: 
Direct recording electronic (DRE) voting machines with and without voter-verified paper audit trail (VVPAT)
Source: 

India, Systematic Voter’s Education and Electoral Participation (SVEEP) Election Commission of India, 'Voting Process at Polling Booth' , accessed 23 May 2019

[…]

"Record your vote by pressing the ballot button opposite the symbol of the candidate of your choice on the Electronic Voting Machine (EVM); You will hear a beep sound;

Check the slip that appears in the transparent window of the VVPAT machine. The slip with the Candidate serial No., Name and Symbol shall be visible for 7 seconds before it drops in the sealed VVPAT box;

You can press NOTA, None of the Above, if you don't like any candidate; it's the last button on the EVM. […]

How to use EVM (VVPAT)

EVM stands for Electronic Voting Machine and VVPAT stands for Voter Verifiable Paper Audit Trail (VVPAT). […]”