Complex sentence: Grab (formerly known as GrabTaxi) is an online transportation network and technology company that offers wide range of ride-sharing and logistics services through its app in Southeast Asia, specifically in Malaysia, Singapore, Thailand, Vietnam, Indonesia and the Philippines.
Split into simpler sentences: Grab (formerly known as GrabTaxi) is an online transportation network company. The company is a ride-hailing platform which offers a wide range of services through its app in Southeast Asia, available in Malaysia, Singapore, Thailand, Vietnam, Indonesia and the Philippines.