SMS stands for Short Message Service. SMS is also often referred to as texting, sending text messages or text messaging. The service allows for short text messages to be sent from one cell phone to another cell phone or from the Web to another cell phone. Bulk SMS is the cheapest and fastest Marketing Tool used in the World today by many for marketing campaigns, events, promotions etc. There are many other options used for mobile marketing, but none of them gets the message across faster than a simple SMS.