Several sites, one account.
THE OPTIONS
One hosting plan with enough addon domains for all your sites Separate hosting accounts, one per site Reseller hosting, if the sites belong to different clients
WHAT DETERMINES IT
The addon domain allowance on each plan shows how many separate websites it supports.
Disk and bandwidth must cover all of them together.
WHEN ONE ACCOUNT SUITS
Several sites you own Modest traffic across all of them You are comfortable with them sharing resources
WHEN SEPARATE ACCOUNTS SUIT
Client sites, where separation matters A busy site that would affect the others Sites needing different PHP versions on the same domain structure
THE RESOURCE POINT
Sites on one account share its CPU and memory allowance.
One busy or badly built site affects the others.
HOW TO ORDER
Choose a plan with sufficient addon domains, or order separate accounts.
For client sites, consider reseller hosting instead.
IF UNSURE
Open a Sales ticket describing how many sites and what they are.