What is the role of vSphere Distributed Services Engine?

Provide a live shadow Instance of a virtual machine (VM) that mirror, the primary VM to prevent data loss and downtime during outages

Implement Quality of Service (QoS) on network traffic within a vSphere Distributed Switch

Provide hardware accelerated data processing to boor.t infrastructure performance

Redistribute virtual machines across vSphere cluster host affinity rules following host failures or during maintenance operations