Gatsby Hosting measures your usage for your workspace with two metrics:
Bandwidth is the amount of data transferred over a specified amount of time. Each plan has a Bandwidth allocation expressed in gigabytes (GB). For free plans, bandwidth is measured over the duration of the current month (e.g. Jan. 1 - Jan. 31). For paid plans, bandwidth is measured over the duration of your billing cycle.
Anytime a user visits your Gatsby Cloud site, some data may be transferred over the network to the user's browser. Every file the user downloads that is not retrieved from their browser cache contributes to the amount of bandwidth consumed for your organization.