ESXTOP is one of the most versatile and popular tool in the VI Administrators tool belt when it comes to real time performance analysis and data collection in a vSphere environment. In fact, ESXTOP also came up in the most recent episode of the VirtuallySpeaking Podcast covering the Top 10 Tools for VI Administrators, which Duncan Epping and I had the pleasure to be part of.
To use ESXTOP, you are required to SSH to an ESXi host as it is only available in the ESXi Shell. Traditionally, this has not been a huge issue for on-premises environment, especially as you can enable access when you needed to run ESXTOP. However, when operating on VMware Cloud on AWS (VMC), customers no longer have to worry about managing the underlying infrastructure and can now focus on being a consumer of the VMware SDDC. One side affect of this operational change is that customers do not have direct access to ESXi and would not be able to use ESXTOP.