Journey vs Campaign Confusions

Journey vs Campaign Confusions

Hi there!

I hope you're all doing great!

I'm new to the Zoho MA and I'm confused between Journey and Campaigns. I'm not sure if these two work together or not. I hope you can enlighten me.

What I'm trying to do is setting up a Newsletter.

1. We have a sign-up form on our website (it's our own form, not from Zoho) 
2. Once a lead entered his/her email address and click on 'Sign-up', an email will be sent to confirm the email (is this kind of automation done through Journey or Campaign)
3. Once confirmed, a welcome email will be sent to the lead followed by our email campaigns (is this kind of automation done through Journey or Campaign)

Thank you in advance!