[IndigoStack]

Not so much that MAMP is old as that it's too simple for a lot of work. Essentially:

* MAMP offers a subset of the services Indigo provides (eg MAMP provides two PHPs, Indigo provides seven)

* with Indigo you can run any combination of services all at once if you like (that's a stack in Indigo)

* then in Indigo you can have multiple stacks all running together if you want

* you can share your Indigo stack with a team and have them all running the same stack with one click

So for example, if you maintain a really old Drupal site you might want a stack with PHP 7.2 (or even 5.6) and Apache, and perhaps you're migrating that old site to Laravel, so you'll create a stack with PHP 8.2 and nginx. You can give both their own domain names (eg oldsite.test and newsite.test) and run them both simultaneously. That's super easy to set up in Indigo.