Assume that you are a software development architect for a global company that has over $50,000$ employees working in $15$ countries and $50$ offices. You have accepted a task that requires you to design a new cloud$-$based, unified, business contract management software system to replace the company's old business contract management system, which was built based on the data management systems from three different software vendors: Oracle DB$,$ Microsoft SQL Server, and SAS Business Intelligence.

The main goals for this project are the following:

Remove the difference between the user interfaces of all three data management systems and provide unified access to all of the required business functionality

Enhance the security and reliability of the business data

Improve the system availability and performance