The document discusses why third-party archiving is still necessary in Exchange 2010. While Exchange 2010 includes native archiving capabilities, these will not satisfy all organizations' requirements. Exchange 2010 archiving lacks capabilities like single-instance storage, archiving of non-email data types, sophisticated e-discovery tools, and sufficient compliance features. Most organizations will require additional capabilities that drive adoption of third-party archiving solutions. Legal, regulatory, and functional needs are the main drivers for organizations to implement archiving systems beyond what is available in Exchange 2010.