Hosting plans have limits on the total amount of traffic for the month, measured in gigabytes (GB). Most websites will fit within those limits. If a website has a significant amount of traffic there are often techniques that can be used to make a website more efficient. This is good for both lowering your traffic usage and making your website faster for visitors.
Notifications are sent when a hosting plan gets close to its total traffic usage or exceeds it. The Arrow Technology over use policy applies to traffic, so exceeding the traffic limits won't stop your website working but you will need to either resolve any issues causing excessive usage or may need to upgrade your plan.
If you are on a plan which has unlimited traffic then our fair usage policy applies, which is detailed in our Terms & Conditions.