What do you use as framework/saas as client portal?

hello,

I am trying to build my saas and I have designed all the packages but we are facing an issue.

Our packages for our web solutions have about 500 differents iterations 'cause the customer have to choose between some options which bring a lot of options. We cannot or want to create all differents options in Woocommerce, by example.

The goal : we want to build a customer/client portal where our customers can use a tool to build the final package and then, we fire some api requests to bring the solution alive.

What do you use as framework or saas to build a portal/dashboard for your customers ?

We have looked into memberstack but we cannot create 500 differents products where the customers have to select the right one. I think we need something like angular/react framework and build something from scratch.

What do you use where we can find authentification, sso, role, permissions users, as framework/tool ?

thank you for all your advices,