Google Cloud Virtual Private Cloud (VPC)

I think Google Cloud Virtual Private Cloud is more appropriate in a situation where you need the table stakes features of a public cloud with the security of a private cloud.

Google Cloud Virtual Private Cloud is across all regions in a project. It allows monitoring traffic. It can be used for multiple types of scenarios of the project which includes high secured or want to allow traffic with firewall rules set on each port number and with IP address range. Allowing internal IPs to access or allowing everyone on the internet to allow on a certain port. Google VPC can be shared and allows VPC peering.

An effective pricing strategy is in place. Google Cloud VPC is the most secure since it runs on a private network and never contacts the public network. Google is well-known for its AI/ML and Kubernetes engines, both of which have a leg up on the competition. Google Cloud VPC's database services are yet to be improved.

Very Good for Data Analytics and Development of APPs

VPC is well suited for migration from on-prem to the cloud and allows use of all the other computing resources that GCP has to offer in a scalable manner. However, if the data is highly regulated or require auditing, keeping it up on a private cloud on-prem may still be the best option.

Well-suited scenarios: 1. Large Organisations with more than at least a thousand employees. 2. Teams spanning across multiple countries or regions. 3. Research institutes require privacy and confidentiality. 4. Educational institutes to separate departments from various attacks.
Less appropriate scenarios: 1. Startups have less than 100 employees. 2. Users are accessing resources from the same place.

Google Cloud Virtual Private Cloud would be best suited when the person or the company who plans to implement it actually knows how to use it. Although it is extremely easy to use, if implemented without suitable expertise, it might require some training sessions. So if it's a completely new organization, then implementing and maintaining this would take a lot of time and expertise.

Pricing model is good. Security wise Google Cloud VPC is best as it runs on private network by default and never touches Public network which makes it very secure. Google's AI/ML and Kubernetes engine are among the best and it has lead over other service providers and google is known for these. Google Cloud VPC has yet to improve on their Database services. The pace of launching new features and services are very slow with Google Cloud VPC. Also the technical support still has room to improve.