Exam 3V0-21.21 topic 1 question 50 discussion

A customer requests a review of its current vSphere platform design.
The following information is noted:
✑ There are three different workload profiles for the virtual machines:
- Tier-1 virtual machines operate resource-intensive applications and require dedicated allocations for CPU and RAM.
- Tier-2 virtual machines operate internet-facing applications and require access to externally facing networks.
- Tier-3 virtual machines operate platform management tools such as vCenter Server and have different lifecycle management requirements.
✑ Tier-1, Tier-2 and Tier-3 virtual machines are all hosted on a single large vSphere cluster.
✑ The Chief Information Security Officer (CISO) has raised concerns that hosting externally facing applications alongside management tools does not meet internal compliance standards.
✑ The Operations team has raised concerns about Tier-1 virtual machines negatively impacting the performance of vCenter Server.
✑ The Operations lead has stated that management changes have consistently been rejected by application teams.
As a result of the review, which recommendation should the architect make regarding the design of this platform?