Jack owns a startup that provides IT solutions to customers.

Jack owns a startup that provides IT solutions to customers. Jack’s business was faring very well; however, he was facing issues with the scalability of his IT infrastructure. He decided to remedy this situation by implementing a solution, which connected his computers and servers into a single unified computing resource. He connected these computers and servers using various hardware, networks, and software. Additionally, implementation of this solution helped him protect his business against application, server, software, and site failures. Which solution did Jack implement?