VMware ESXi

Pretty much any scenario except maybe with heavy DB requirements. But VMware ESXi fits almost all scenarios and highly recommend using it everywhere possible for all sizes of environments. It is a small footprint and manages any size of the environment. I have used it for 5 servers up to hundreds of VM's.

VMware ESxi is a very stable and reliable OS. We have had longer uptime on the server by using this OS. Adding more CPUs without adding sockets is as easy it used to be. Too many servers have been created by techs that's are not correct leads some serious issue

Ease of use, and it just works. Integrates seamlessly with Veeam and many SANs. Cost can be efficient if you can utilize essentials in your environment.

VMware ESXi is well suited for businesses ranging from small to medium all the way up to large enterprises. If you have an in-house IT Department at your company you are in great hands to get started with VMware; however, if you don't have an IT department or if you are on a contract basis with a limited budget there are cloud-hosted products that may better suit your needs.

VMware ESXi is well suited anywhere you need to have services up and running quickly. Once set up, the entire hardware later is removed when standing up new servers and workstations. This immensely cuts down the time needed to bring up a new service. It also makes it quick and easy to segment new systems in their own networks.

Cost is the only scenario where it may not be appropriate. You have to invest in high performant hardware with a lot of resources.

Extended page table support comes in handy if you're trying to attach a GPU to a virtual machine or if you're trying to do some sort of nested virtualization which is a good way to test Hyper-V. If you require a single virtual machine or similar needs for the machine, it is not recommended to use. But when you have fewer hardware facilities, it is highly recommended to use them.

Appropriate: Small business environment (when multiple virtual servers are needed.
Less appropriate: 24/7 environment (unless you spend lots of money on high availability servers.

If you're looking for basic virtual servers that you can buy one larger server to run 5+ smaller servers on, the basic VMware ESXi license is free to use. Also good if you're testing how to create virtual servers or test a new environment. On the negative side, to use features like clustering and fault tolerance, you need a higher level license above their base "free" VMware ESXi license and the need for their vCenter Server to maintain it. That can carry a hefty annual software/support maintenance bill every year.

On the professional end, racks of individual servers reduced to a few physical hosts save space, power consumption, and financial resources. The hosts may need to be a bit more powerful than the individual servers, so one host will cost more, but a single host will cost less than replacing 5 single servers. Even if you plan a cluster, which will cost physical raw hard drive storage space like a RAID will, the cost over replacing 5 individual physical servers still comes out cheaper. If you can justify the lower cost for the physical hardware and plan to use the money unspent there to help pay for the upper level license costs, you are good to go.

VMware makes hosts management very easy to configure and minimal steps are required. Accessing via center makes it easy to manage about 50+ hosts, otherwise, it would not be an easy task to view and manage the hosts in a single interface.VMware can be recommended to use if people are looking for applications to manage the hosts at low costs if not much third-party integration is not involved.

VMware ESXi is well suited for environments that need a variety of computer configurations that can be made available onsite and remotely. It is also an excellent choice where security and isolation is needed among computing devices.

One of the best hypervisors available among other competitors. Compared to others, resource pools of VMware ESXi are much more stable. It is saving a lot of hardware costs as we don't have to use multiple server hardware for different applications. Sometimes less appropriate when we require auditing of logs and integration with AD audit tools.

ESXi is versatile and can support all business needs. It can support standalone installations on small or isolated sites to high-availability multi-site distributed data centers, with local storage or central storage (SAN, NAS). Supported OS list is very important so all use cases are covered without issues as it does not need any OS side modification like the kernel.

ESXi is very well suited for companies that don't have the money or can't afford to run a big data center. We were able to reduce our server hardware footprint from 15 to 1. All of our data center ESXi hosts will now fit into one rack, reducing the number of physical servers also reduced our power consumption.
If you only need to run one OS for all applications, ESXi may not be for you.

Using vCenter, the management of multiple hosts is very straightforward. We have an environment with about 30 ESXi hosts so management of these without vCenter would be extremely difficult. However, due to having a web interface for all hosts and vCenter etc, securing everything with web certificates can be frustrating. Using plugins in vCenter, management of third party equipment such as SAN arrays does make life a lot easier being able to manage everything from the one place - single pane of glass etc.
Backups are also made easy and straightforward using systems such as Veeam which plugs in directly to vCenter.

VMware ESXi are the market leader and make management / administration simple and intuitive. If you've got the budget to get vCenter and particularly the essentials package that supports vMotion, then moving machines for maintenance is hassle free. Integration with the likes of Veeam make backup and recovery very simple. The templates to copy a machine or to quickly deploy several VMs has saved us a lot of time.

Great option for small businesses that need to virtualise a few servers on limited hardware. A lot more cost effective that hosted servers. Great in small businesses where you need to move servers from hardware to hardware when upgrading and allows for minimal impact when migrating. Also great for disaster recovery

I do like [VMware] ESXi, but the pricing is hard to swallow for a smaller company. I love the ability to have many options for backup solutions, like Veeam, but the functionality you get for the pricing can be hard to justify. That being said, if you are not virtualized, I definitely recommend something like VMware to get virtual[.]

[VMware ESXi is] well suited to host business critical applications that require 5 9’s uptime. Not so well suited for a business that does not have a large buying power as it’s expensive. Lots of documentation and scripts widely available on the internet. Powershell and python native tools available make this a developers dream.

Shared hardware resources. VM Pools. Well suited within organizations with remote workers [as] it can eliminate needs for Advanced firewalls, keep security intact within organization applications.

VMware ESXi is one of the two or three best products I've used in my career. It revolutionized IT infrastructure when it was released, and it continues to be an essential underpinning to our entire environment now. It is the segment leader for on-premises server virtualization. It does carry some significant licensing costs, but we have found that those easily pay for themselves over time for an institution of our size.

In my opinion, VMware ESXi is the best software for running virtual machines out of other hypervisors that I have tried. It works great for a good amount of servers. If you're hosting only a handful of servers, you may be pressed to find a free or low budget solution. If you're running a medium-sized business, up through a large enterprise, this is the technology you want.

I would say VMware ESXi suited to most environments, really, depending on the available budget. It has proven very reliable in my experience, which is very valuable to us, as we are a 24/7 company.

It's well suited for most average workloads, but not ideal for workloads which require large amounts of resources, such as CPU cores and memory.

VMware ESXi works well in large environments where lots of computing and storage resources need to be shared and constantly reallocated for virtual machines. There are full-featured versions that come at a high cost, but there are also versions that lack some features that may not be needed at a lower cost, and even a free version for small lab environments. If you just need one virtual machine to run periodically, you can use one of the more consumer-grade hypervisors like Workstation, Fusion, or just Virtual Box for free.