This stage is refereed to as the investigation phase.
List of business requirements
Documentation of Accounts, Document sizes, Quotas, Groups, Sites and any other personalized features
Verification of requirements
An initial meeting is scheduled to outline the IT agenda and to confirm that it is in keeping with the organization goals. At this time a cost benefit analysis is conducted to ensure that Google Apps is the ideal candidate to achieve the goals outlined. Other architectural particulars such as the requirement for Google Apps backup (Vault, the user sync process etc. are also outlined in this phase.
At this stage a list of User and Service Accounts, Document sizes, Quotas, Groups, and Site layouts is compiled. Administrators for each site if necessary is identified.
Once the requirement phases are complete, the data is compiled and verified before building.