There has been a snappy forward advancement in cloud. With the developing measures of affiliations, turning number of affiliations are being utilized as assets in the cloud. Issues arise regarding the certainties of various clients utilizing these assets like round measure of room associations which helps in keeping from the cost. Putting away these associations evades the high cost while posting information during the building of machine orders. This collection of information gives better execution whilst less “far point cost” and ready to make prepared modifications. Cloud can yield better possibilities through net where security weaknesses are restricted. Despite of “wellbeing” being one of the brimming with risk weakness, it adjusts unmistakable connection to go into assumed control handling general condition. This paper uses “MapReduce” library that parallelizes the figuring, and handles perplexed issues like data spread, stack modifying and adjustment to non-basic disappointment. Enormous information, spread across finished many machines, need to parallelize. Moves the data, and gives booking, adjustment to non-basic disappointment. In this paper, a graph of MapReduce programming model along with the applications are explored. The maker has delineated here the work procedure of MapReduce process. Some fundamental issues, like adjustment to non-basic disappointment, are considered in more detail. Without a doubt, even the outline of working of Map Reduce is given.