What is the purpose of a secondary IP address especially for server hosted in cloud

Hi

I am giving some advise to my customers as to the servers to purchase. I am very familar with the actual hardware. However, more of my customers are planning to purchase virtual servers in the cloud.

One of the common questions that I face is that the users keep asking me if the secondary IP is necessary. My question what is the secondary IP Secondly will not purchasing the secondary IP cause any issues?

Thank you,
NaviWorldSGAsked:
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Zephyr ICTCloud ArchitectCommented:
Usually secondary IP-addresses are used for hosting multiple (SSL) websites on an instance or for other application related setups where the use of multiple IP-addresses are needed (e.g loadbalancer).

Now, if it will cause issues later on is difficult to say, that depends on the plans the customer has, now and in the future. But I'm pretty sure that buying extra IP-addresses later on will be possible.
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NaviWorldSGAuthor Commented:
Thanks for the response.
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