NEW DELHI—Amazon.com Inc. launched in India on Friday eight global and local streaming services on its video platform, in a move aimed at boosting subscriptions. The move comes at a time of increasing competition from global and domestic rivals in an important market for the U.S. tech company. The Amazon Channels service will help customers using its Prime flagship loyalty program to subscribe to multiple streaming services on a single interface, Gaurav Gandhi, the head of Amazon Prime Video in India, told Reuters in an interview ahead of the launch. “We believe besides solving customer problems … multiple apps, multiple log ins … it also solves a lot for our partners where they are able to get the benefit of Prime Video’s reach and ubiquitous distribution,” said Gandhi. Channels is launching with streaming services from partners including Discovery Inc., Lions Gate Entertainment Corp., and Mubi, said Gandhi, adding that India …