Microsoft Exchange Server 2010 was rolled out with a lot of enhancement and later in Exchange Server 2010 SP1 further improvements centered at /hosting mode which encouraged hosters to sell hosted exchange other than on-premise deployment and /hosting mode deployment was adopted by numerous firms and those who sell hosted exchange. Although, /hosting mode resolved different challenges for hosters but at the same time it had limitation as compared to on-premise mode and unluckily these limitation hindered doing business because fundamental requirements were unmet in /hosting mode. So, Microsoft realized the lack of feature set shipped with /hosting mode and decided to move ahead with release of Microsoft Exchange Server 2010 SP2 which is expected to be released later this year.