Can Sitefinity be integrated with website

Hello Team,

We have requirement to manage our  content centrally. Please let me know if the following scenarios are possible with Sitefinity.

1. Can we use Sitefinity in backend as an API? 
2. Can we use Sitefinity controls in our custom ASP.Net MVC .cshtml page?

3. How Sitefinity manage the data and how it will be integrated with our website data?

We are building a website(which is complex in business) and we want to know that, can CMS help us for managing our content centrally?

Thanks & Regards,
Charu Pahuja