Private data centre or iaas?

I have several sites with on premise VMware setups running numerous applications. I want to move all out to cloud. The challenge I have is what fit is best. I’m leaning toward private data centre as I can transition swiftly and all resources are dedicated and will be resilient.
Iaas has been mentioned but I’m not sure if it’s economical as I have over 120 vms.

Interested to hear from other people who were in this scenario and what they chose. Thanks
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Prabhin MPEngineer-TechOPSCommented:
As you planned to move all your servers from on premises to cloud. If we consider about AWS as cloud service proivder, there are certain tools called AWS connector where you can migrate the VM from VMWARE to AWS.
Otherwise you can go for manual migration and that depends upon the application which you have deployed. According to me, As you have nearly 120vm in your premises its very tough job to migrate the VM manually so you can go for AWS connector or any other tools for migration.
Once you created the private instance you can configure VPN connection to your Firewall, so it will be access as private instance via VPN tunnel. Make sure that you have created a different VPC for your environment. For VPN connection you can go for AWS VPC vpn but its costier. IF you are not considered about cost then no issue, other wise you can create a Public instance and configure OpenVPN.

Please find the following link to migrate the VM from VMWARE.
Hope this will help you...
Sid_FAuthor Commented:
My question is really around what's the best most economical fit rather than what tools are required to move there. Thanks
We are in the same boat. We have a fairly decent sized VMWare environment on two different clusters and two vCenters. I've been researching because to move all our VM's would cost a good chunk of money monthly based on our CPU usage. We are using Azure so I can only speak to what they have.

What I've found out (and this stuff changes very often), is that instead of IaaS, a lot of people are using SaaS. For example, instead of having a SQL server, you would utilize the SQL databases feature inside azure. Granted those do have limitations, but if you just want to store data without the need to manipulate it, then that might work.

Another example. Instead of having a full web server (IIS, apache, etc), you can build apps and present them as a service.

If you do it that way, you start to limit the amount of VM's you need. Granted, this will not work for everyone, but in my research I've been seeing a big push towards SaaS and not much on IaaS.

I'm making this overly simple but this is what I'm noticing.

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