Cloud security differs based on the category of cloud computing being used. They are therefore separated into software (PaaS) and hardware (hybrid cloud).
Using a cloud application does not mean you can’t use a dedicated firewall for protection as long as the software uses the same underlying protocols as the cloud.(I would imagine that most companies that use and/or deploy PaaS’s, use the same underlying protocols.)
Infrastructure
All the above cloud infrastructure options are on-premise. If you are using an on-premise cloud service, some restrictions apply. The basic information available is below.
1) You can host services inside of a virtual private server. There are some limitations to what you can do, so make sure that you understand exactly what you are getting into.
2) If you choose to do this, you cannot create a bridge between on-premise servers and the external resources that you use to provide services on the cloud. If you do this, the firewall will not allow packets coming from on-premise and out of the cloud network to traverse, and vice-versa.
3) If you choose to do this, you have to choose the exact use case you have. I would not do this in any case unless you are one that has a very significant user base of very sensitive data. Another reason I would not do this would be if I had a very small number of customers who relied on a very high level of information security for their services,  and there are also other services for application access, you can click here! to find information about this.
4) You cannot mirror your environment. You can have a virtual local (virtual) network, or a shared network (physical or virtual). If you use the exact same on-premise servers in a shared network, you would not be able to mirror that and have the two levels of redundancy. If you use the exact same virtual servers in a physical network, then you can mirror. This is why it is so important that you have a strategy for migration.
Virtual Machines
Use them where you can. There are a lot of options, and they are all valuable. But in general, do not use them for production purposes unless you have very little money to spare. The large exceptions to this are as follows.
As a “hybrid cloud” provider, you can use any of the virtual machine types. I recommend VMware because of how easy it is to use with vSphere. When you create a virtual machine from one of the cloud providers, it is automatically added to a virtual machine pool. You can also use a virtual machine from a third party (Microsoft, HP, Dell, etc.) vendor if you prefer, but the advantages that you receive do not outweigh the disadvantages. For a short-term deployment, a VMware will provide the advantages of the cloud without the disadvantages. If you are going to use a shared machine for longer periods, then you should look at their alternatives first.