  Bandwidth is one of the essential resources for communication. Due to the
emergence of large number of new services in different types of communications
and their value added entities, the demand for bandwidth has gone up more than
ever before. The Internet and its allied services are one of the main users of
the global bandwidth. With this increasing demand, effective usage of the
available bandwidth and the discovery of new bands become very important. In
this article, we show current bandwidth usages and their utilities in different
application domains. We show the present trends of bandwidth used for global
communication by taking the international bandwidth of the core networks in to
account. We analyzed the bandwidth trends in optical and wireless communication
domains. Emerging services such as Internet of Things and their bandwidth
provisioning too have been discussed in this article.
