Thank you for reaching out to the Microsoft Q&A platform.
Based on your requirements, it seems like you need a VPS with at least 16GB of RAM, 4 CPUs, and a low cost. You also mentioned that you are considering a managed solution, which can be more expensive.
One option you could consider is using a cloud provider like Azure or AWS. Both offer VPS solutions that can be customized to your needs and can be cost-effective. Azure offers a service called Azure Virtual Machines, which allows you to create and manage virtual machines in the cloud. AWS offers a similar service called Amazon EC2.
Both Azure and AWS offer a range of pricing options, including pay-as-you-go and reserved instances, which can help you save money. Additionally, both providers offer managed services that can help you with tasks like patching and monitoring, which can save you time and effort.
If you prefer to use a traditional hosting provider, you could consider a VPS provider like DigitalOcean or Linode. Both offer VPS solutions that can be customized to your needs and are cost-effective. They also offer managed services that can help you with tasks like backups and monitoring.
The best solution for you will depend on your specific needs and budget. I recommend researching different providers and comparing their pricing and features to find the best fit for your requirements.
If this does answer your question, please accept it as the answer as a token of appreciation.