As people continue to enter and grow their business they will have to find new and better ways to get more customers. In order to be able to get more customers they must have good data on their potential customers. Google allows you to build a website so that you can sell your products online. With this website, google allows you to track the data on the website. For example, if someone purchases an item google will track their process all the way to their purchase. That’s what is called the old search console.
As google got more advance they came out with a New Search Console. This console is clearly more sophisticated than the Old Search Counsel. One big difference is that there is a more reports for the New Search Console than the Old Search Console. One report that the Old Search Console does not have is the sitemap report. This is very useful when you are trying to give information about important things on your site. This is kind of your highlight to you site. Google helps you with providing information on things that you mark as important.
Another difference between the two is that the new search console has ownership verification. This allows you to protect your site better. Also you can have ultimate control, so if multiple people have access to you site to help you build it, you can still only allow them access to specific parts of the site. If they want more control you will have to approve it for them after you verify that you are the owner of that account.
https://support.google.com/webmasters/answer/9008080?hl=en&ref_topic=7440006