To meet with the challenge of information explosion and fulfill the vision 2021, Bangladesh needs cloud computing and digital library system. There is also an immediate need to make a dedicated decision to ensure the use of cloud computing in digital libraries. This article provides a holistic understanding of cloud computing and digital libraries including its present context and future directions. This paper also focused on opportunity and developments efforts to overcome the challenges of Cloud computing for digital libraries. Various technical issues ingrained in the concept of cloud computing and digital library also have been analyzed in the article. Documentary sources, review literature, copulation of secondary information, interview with eminent educators, scholars and the direct observation are the major methods of this article. Finally the author brings out the future improvement in digital library using cloud computing technology in Bangladesh.