HI Guys! I'm just a newbie on Exchange Server and was given a task to migrate 2007 to 2013. Can you guys help me what are the requirements and needs to be prepared before migrating? Thanks in advance.

It is always recommended to check prerequisites before performing migration from Exchange 2007 to 2013. https://technet.microsoft.com/en-us/library/ff805032%28v=exchg.150%29.aspx

Also check the step-by-step Exchange server migration guide http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx

• Proposed as answer by Peter Gomes II 6 hours 23 minutes ago

You may follow Exchange server deployment assistant that is available from Microsoft and would be a perfect guide for you. It covers all the required aspects and helps to check the required prerequisites while upgrading from Exchange 2007 to 2013.

If you are still concerned about data security, you may also consider on this automated solution (http://www.exchangemailboxmigration.com/) that provides a very hassle-free environment to get this job done in more easier and secure way.