What is the fine-grained topic of the following text: By Rajiv Sodhi: Advancements in Information Technology like Big Data, Mobility, Event based Analytics ; availability of fast and online communications globally, portability of communications in global roaming and number portability open a plethora of new business opportunities by leveraging these technologies to promote business , increase revenues and reduce costs. Only return the topic.
Advancements in Information Technology and their impact on new business opportunities