Azure .NET SOAP Deployment on Azure APP Help

I need a Microsoft Azure App Service expert to help deploy a .NET SOAP service on an Azure account. The service works fine on our on-prem Windows server but is encountering connection issues with external services after deployment.

Requirements:
- Work through MS Teams calls, no access sharing
- Troubleshoot connection issues with external services

Ideal Skills and Experience:
- Expertise in Azure App Services
- Strong knowledge of .NET and SOAP services
- Experience with Azure networking and external service connections
- Proficient in troubleshooting Azure deployment issues

Please ensure you can explain the resolution process, as we want to learn and understand how to fix the issue.