Can someone please explain in simple terms what a cloud server is? and why it is better than vps/dedicated?

A Cloud Server is virtual machine that is dynamically scalable by virtualization.

Can someone please explain in simple terms what a cloud server is? and why it is better than vps/dedicated?

It is better than a dedicated and vps for many reasons:

The abiity to self manage spinning up and spinning down vms on your own with any setup you like (ie whatever os you like and pre packaged applications)

They can move between machines for better dynamic management of your resources, better uptime.

Reduced hardware downtime.

Higher performance, higher availability and better redundancy on your data since if you pick the right provider its going to be on an enterprise san.

ability to scale your resource literally within minutes by adding more cpu / ram / hard drive on the fly - self directed.

Simpler networking - ability to add ips to your config on the fly.

That sound interesting but is there any extra price for cloud server services? please tell.

That sound interesting but is there any extra price for cloud server services? please tell.

Shared hosting and VZ based VPS hosting is chronically oversold - like, one gig of ram is sold several times, hoping/knowing that not all users will use all their allocated ram. It's a bit like the airline companies - they sell 600 tickets to a 500 seat jumbo jet, knowing that 100 ticketholders will never turn up.

Dedicated hosting is just that - dedicated - and all resources (perhaps excluding bandwidth) is dedicated to your server. So there is no overselling going on...

Cloud hosting however, is actually "underselling". Our cloud clients expects to be able to scale up and down instantly when needed. They know that if the server they are on has hardware failures their virtual cloud instance will start up somewhere else in 5-40 seconds. That actually means that we need idle hardware just standing there, ready, for failovering, scaling etc etc.
Take the jumbojet example from above - in the case of cloudhosting you could only fit in 300 people in a 500 seat jumbo jet, knowing that those 300 might suddenly need more seats midair.

So, apart from the large investments in technology, software development etc etc - that is the main reason for cloudhosting being a bit more expensive than traditional shared hosting/vzVPS's/deds/etc.

:)
D

That sound interesting but is there any extra price for cloud server services? please tell.

Not for long.

You will see that the enterprise cloud market is going to be cheaper and better than the dedicated market. I think that is all the dedicated early adopters are waiting for at the moment before moving to it en masse.

cloud servers take advantage of the numerous benefits of cloud computing...including instant provisioning, high availability, on demand resources, DR, etc.

That sound interesting but is there any extra price for cloud server services? please tell.
The extra price is worth, when comparing the loss you incur due to downtime!

Can someone please explain in simple terms what a cloud server is? and why it is better than vps/dedicated?
i. A cloud environment will enable you to create cloud instances which can be created and destroyed at will. So, if you short bursts of high computing power on a short notice, cloud hosting is the better choice than VPS or dedicated.

2. The pricing of these instances will also be pay as you go. Therefore you only pay for what you use as compared to VPS or Dedicated.

3. Since you can have elastic or stretchable computing power on one instance, you save on license costs for multiple machines and cost of re-installation/management.

Hope it helps.

Cheers! :)