The revolutionary changes in technologies brought the scientific and engineering communities to embrace grid technology. The new scientific applications are having challenging demands of data, computing power, instrumentation intensive science and importance for collaboration. Major initiatives are underway worldwide, aimed variously, at supporting major science and grid research projects, developing and facilitating grid technologies. The technology improvements with collaborative science enabled by quasi-ubiquitous internet, drives the grid technology to offer a Global Cyber Infrastructure on which new scientific and engineering research can be pursued with increased efficiency.