Organization vs. company account
When a Pipedrive account is created, both a user account and a company account are created.
That company account is your company, and you can invite your work colleagues to join you as users to access the same database.
However, you do not have to create a brand new company account in order to use Pipedrive. If you know someone who already has an account, they can invite you to join their company.
If you are invited, the access you have to data and account privileges will be decided by the company owner or other users with User Management access.