I'm currently researching network security measures for my company, and I'm trying to understand the advantages of using a VPN (Virtual Private Network) compared to a combination of HTTPS (Hypertext Transfer Protocol Secure), DoH (DNS over HTTPS), and ECH (Encrypted Client Hello) for protecting our corporate network. I would like to delve into the technical details and explore the potential benefits of each approach.
Here's what I'm specifically interested in:
How does a VPN enhance security in ways that HTTPS + DoH + ECH might not? Are there specific threat scenarios where a VPN is more effective at safeguarding data?
note that all my applications are web based and also everything is on the cloud
I've already saw this: What does using a VPN offers over HTTPS + DoH in terms of protection? But asking more about it's security benefit for a company