IIS Server Expert Needed - Domain Mapping

As a Windows user with IIS 10, I am in need of a professional who can help me configure the server properly. My main goal is to host a website, and domain mapping is an essential part of that process.

Key Responsibilities:
- Map domain to the IIS server
- Ensure website is accessible via the domain
- Handle any other essential configurations for smooth website hosting

Ideal Skills:
- In-depth experience with IIS 10
- Proficiency in Windows server administration
- Strong understanding of domain mapping
- Good communication skills to ensure smooth interaction and understanding of the task.

Project Detail as below,

I have my own Windows Server and I am using IIS for website deployment. I have a total of 5 websites. Currently, I am using a static IP with different ports for public access to these websites.

For reference, please see the following scenario:
1st website: http://103.xxx.xxx.xxx:5555
2nd website: http://103.xxx.xxx.xxx:5556
3rd website: http://103.xxx.xxx.xxx:5557
4th website: http://103.xxx.xxx.xxx:5558
5th website: http://103.xxx.xxx.xxx:5559

Now, I have purchased the domain www.eaproerp.online (with free SSL enabled). I need to map this URL to each domain name, and after mapping, the sites will be accessed as follows:

1st website: https://www.eaproerp.online:5555
2nd website: https://www.eaproerp.online:5556
3rd website: https://www.eaproerp.online:5557
4th website: https://www.eaproerp.online:5558
5th website: https://www.eaproerp.online:5559