Windows Server 2012 redefines the server category, delivering hundreds of new features and enhancements spanning virtualization, networking, cloud computing, storage, user experience, automation, and more.

The MCSA: Windows Server 2012 certification is a prerequisite for earning the MCSE: Messaging, the MCSE: Private Cloud certification, MCSE: Server Infrastructure certification, MCSE: Sharepoint or the MCSE: Desktop Infrastructure certification.

The Microsoft Certified Solutions Associate (MCSA) is an entry-level Microsoft certification that validates the knowledge and skills an entry-level IT professional will learn in the first year working with a Microsoft product

MCSE is expert-level and validates your ability to work with Microsoft technologies. Microsoft offers MCSE certifications in data management, virtualization, productivity, cloud technologies, and networking

The difference between MCSE & MCSA is listed below:

• MCSE stands for Microsoft Certified Solution Expert, whereas MCSA stands for Microsoft Certified Solution Associate.
• MCSE trains you to be a systems engineer, while MCSA trains you to be a systems administrator.
• MCSE has 5 modules: Designing, Planning, Solution, Troubleshooting & Administration.
• MCSA has 3 modules: Installation, Storage & Compute.
• MCSA is easier to get than MCSE.
• Job position for MCSE is L2 & L3 level, whereas for MCSA it is L0 & L1 level.
• Jobs related to MCSE have higher salaries compared to MCSA.

If you want higher salary then you can go with MCSE certification. But as you know now MCSE is a Expert level certification, so first you have to go for MCSA which is associate or entry level certification.