There are two levels of assessment that Platinum7 can provide, Initial and Detailed.
The Initial assessment is designed to be done in around 2 day and provides a deep analysis of your Salesforce org's security settings.
The Detailed assessment provides all of the information from an Initial assessment as well as a thorough assessment of your Salesforce deployment - from the technical aspects of the Salesforce org to the way in which it integrates with the rest of your environment as well as your policies and procedures.
The output of the assessment is a document containing the findings as well as recommendations on changes and a roadmap for moving forwards which will contain any product recommendations and timelines.
Please read the datasheet for more information.