A survey of fault tolerance architecture in cloud computing.

Utilizing cloud computing services has had numerous advantages such as the reduction of costs, development of efficiency, central promotion of soft wares, compatibility of various formats, unlimited storage capacity, easy access to services at any time and from any location and, most importantly, the independency of these services from the hardware. It should be mentioned that the provision of various cloud computing services is faced with problems and challenges that the fault tolerance can be mentioned as the main restrictions.