VMware vSphere® uses the power of virtualization to transform data centers into simplified cloud computing infrastructures, enabling IT organizations to deliver flexible and reliable IT services.
The two core components of vSphere are VMware ESXi™ and VMware vCenter Server®. ESXi is the hypervisor. Virtual machines run on a cluster of ESXi hosts that are managed by vCenter Server. In VMware Cloud on AWS, VMware takes care of much of the management ESXi hosts and vCenter Server.
In an on-premises vSphere environment, you are responsible for many of the SDDC infrastructure management tasks. In VMware Cloud on AWS, you can focus instead on creating, configuring, and managing virtual machines, VM templates, and OVF templates. The VMware Cloud on AWS provides resource management, authentication and authorization, and other features in the background.