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1.  Google Cloud Interconnect Security Cloud Interconnect does not encrypt the connection between your on-premises network and Google's network. Cloud VPN cannot be used with Dedicated Interconnect For additional security, use application-level encryption or your own VPN 2. While using Cloud CDN, the default time-to-live (TTL) for content caching is 3600 seconds = 60 mins 3. Cloud NAT sends only the translation logs and error logs to Cloud Logging service. 4. GCP Dedicated Interconnect - On Premises network device requirements:     10-Gbps circuits, single mode fiber or 100-Gbps circuits, single mode fiber     IPv4 link local addressing     LACP, even if you are using single circuit     EBGP-4 with multi-hop     802.1Q VLANs 5. While using Cloud VPN, the recommended MTU to be configured on the peer VPN  gateway = 1460 bytes 6. Each instance must have at least one network interface. The maximum number of network instances per instance is 8, depending on the instance's machine

Virtual Private Cloud (VPC) VPC Networks Global resources (not associated with any zone) and include subnets, routes and firewall rules VPC Networks do not have any IP addresses associated with them (unlike AWS) Resources within a VPC can communicate with one another using the internal IP addresses By default, resources in two different VPCs cannot communicate with each other. The communication can be facilitated by VPC Network Peering VPC networks support IPv4 unicast traffic only. They do not support broadcast, multicast or IPv6 traffic within the network   VPC Subnets Subnets represent VPC Network partitions using one or more useful IP address ranges Subnets are regional resources. Each subnet comprises of a range of IP addresses. These can be primary IP ranges or secondary IP ranges (alias) A network must have at least one subnet before it can be used More than one subnet per region can be created VPC Network supports following modes of subnet creation:     Auto Mode VPC networks

Google Cloud Network Constructs VPC VPC Routes Firewall Rules VPC Peering Shared VPC Internal and External IPs Static and Ephemeral IPs VPC Subnets Private Access  VPC Flow Logs Hybrid Connectivity Cloud VPN Cloud Interconnect Cloud Router Cloud NAT Cloud Peering Cloud Load Balancing Cloud CDN Cloud DNS