Webfonts can be used across multiple websites/domains as long as the websites/domains all belong to the single License Owner, and the pageviews are not exceeded. Agencies responsible for multiple clients' websites, for example web design agencies or hosting providers, may not share a single webfont license across multiple clients' websites.
Every time the webpage using the webfont kit is loaded (i.e, the webfont kit CSS which holds the @font-face rule is called) the counting system counts a single pageview for each webfont within the webfont kit.
For usage in graphic images shown on the website, consider a Desktop license instead as most allow for it.
This font's webfont license is:
You get a monthly pageview allowance for your webfonts. This license does not need to be renewed.
For example, if you order a license that covers 10,000 monthly pageviews, you will remain within your license as long as you do not get more than 10,000 views per month.
If the website starts getting more traffic, simply place a new order for the additional monthly pageviews you require, as Pay Once webfont pageviews are cumulative.