Established in early 2002, in the bustling world city, MUMBAI. SOA has been recognized as one of the pre-eminent advertising agency offering an array of services across India, engaged in the outdoor publicity on - > MSTRC buses and other buses across India. > Indian Railways. > Hoardings across India. > Wall paintings across India. > Bus shelter across Maharashtra. > Radio | FM. > TV channels. > Electronic & print media. SOA is the Sole Advertising Agency for Displaying and Booking Advertisement on Hoardings, Stand Branding in all MSRTC Premises and we are the only agency having sole rights to advertise on Seat Back & Grab Handles in all 17000+ MSRTC buses.