Drupal 8.x

Hi,

I am using Drupal 8.7.3 to create my site. What are the options for backing up my site?

Thanks,

I would like to be able to add books, book reviews, and affiliate links for each book.

As there are many book retailers with affiliate link programs, is there a way or module that would allow me to enter multiple affiliate link keys/credentials (from multiple book retailers), and have them automatically generate affiliate product links to their website, that match the book page they are associated too?

I'm using the Form API to allow authorized customers to upload a CSV file to create nodes. My buildForm() method uses managed_file field and the validateForm() does the bulk of the work where I can return feedback to the customer as I parse and process the file using $form_state->setErrorByName() method.

I've got a new project to bring up an Ecommerce site. Not high volume, but the product catalog will be pretty large. I'd like to keep it in Drupal, but not certain of the viability of Drupal 8 Ecommerce, since it's a dev-stage project, and going forward in v7 seems like a foolish idea given the lifespan.

Can anyone point me in the right direction of a viable Drupal alternative?

We use Drupal to build a website which allow different company submit the products they sell. So, we have two entity type in the system:

1. Company

2. Products: sold by Company

And in company page, we want to list all the products sold by this company. How to implement this feature?