No. The meeting host can issue invites through InfoCentral or Zoom desktop and mobile applications where invitees will receive an email invitation. Joining the web videoconference is as easy as clicking the link in the email invitation.
Please note, the first time that you use Zoom, the browser may request to download a client app that will then launch the conference (this may appear differently depending on your device PC, MAC, iphone, Android etc). This applies whether you are the host or the participant.