Account, Users & Contracts
This page explains how the user management works.
The Account is used to log in on the website. The credentials are your email address and a password.
Contracts are what give the account quotas to make web service requests. Each account gets a free monthly subscription. In case that more credits are needed than are offered, additional paid contracts can be bought. There are monthly subscriptions for ongoing work (live applications), and one-time credits for batch processing with a time limit.
All Contracts are assigned to the Account. In the event that multiple contracts are active at the same time, the one contract is billed with the nearest expiration date.
The free contract never expires.
A User is the entity that is used when making web service requests from within your program or website. A user may have a life cycle (start/end date) and can be IP-restricted for enhanced security. Multiple users may be used for different programs. Also, the user's api key shows up in the log files.
All users are linked to the Account, and thus share the same Contract(s). In case different users need to use different contracts, multiple accounts have to be created (each with another unique email address).