Is it possible to use Strapi for a web app with mulitiple companies and team members under those companies

[sunnyson]

@Rayuse

And then finally how would orgs be able to invite a team member to join under their org or how would a team member be able to join under a specific org when they sign up

You can invite users to sign-up to a specific Team.

Example, creating an invitation for someone who should join Organization 1, Marketing Team:

@Rayuse

would the org have to create a user on the backend for each team member instead of users themselves signing up through the frontend?

No need, when the user receives his invitation link, he is able to Signup on his own through the registration form, and his role will be automatically assigned.

When the user will access the invitation link, his details will be pre-populated from the invitation that was created through Admin panel.

Example of invitation URL:
http://my-organization-website.com/admin/auth/register?registrationToken=fd8ec5e5ae567325de69d6dac5a9c68e615d440f