The 44-year-old director said he was looking forward to the creative freedom the Internet offers.
"Happy to share that I'm finally venturing into the world of web series. Very excited about the possibilities and freedom this platform offers.
"Just committed to my first one. More details in good time," he wrote on Twitter.
Chiefly an editor, Shirish made his directional debut in 2006 with "Jaan-E-Mann", followed by "Joker" in 2012.
He directed short film "Kriti", which released last year.