Aviatrix Blog 
Keep this infographic handy as a quick reminder of the must-have components you need to protect your multi-cloud infrastructure.
1. End-to-End Encryption
High-performance, end-to-end encryption between VPCs/VNets and between clouds, meeting or exceeding corporate and regulatory requirements.
2. Multi-Cloud Network Service Insertion
Secure point-of-access for network and security services such as next-generation firewalls, IDS/IPS and SD-WAN cloud edge connections.
3. Multi-Cloud Network Segmentation
Secure network segmentation with consistent firewalling across clouds and extending beyond cloud boundaries.
4. Operational Visibility
Multi-cloud network topology map includes both native network resources and secure transit and cloud ingress/egress control gateways. Visibility to network traffic flow including source, destination, port and protocol filtering. Procedures for network and application team collaboration, using detailed analysis of traffic and systems that connect application endpoints, including gateway performance, network latency, route table analysis and security domains.
5. Threat Intelligence Feeds
TI feeds across network for real-time data streams of potential or immediate risks that could impact any node in the multi-cloud architecture. Status of internet access confirmed across all CSPs.
6. Secure Cloud Ingress/Egress Controls
Gateways providing ingress/egress L4 and Fully Qualified Domain Name (FQDN) filtering. Centrally managed filter groups ensuring consistent multi-cloud security for any cloud application communicating with internet-based resources and services.
7. Automated Remediation Capabilities
Remediation capabilities automated to save time and resources. Automated remediation incorporates security across architecture, protecting every network node.
For more tips on how to create a secure cloud network, check out these resources.
The Cloud Pragmatist Series is designed to help networking and cloud architects, engineers, programmers, and developers turn networking and security challenges into opportunities. In this series, we highlight the most important cloud networking trends, while helping you avoid costly mistakes. For more, check out all of The Cloud Pragmatist resources.