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• The example architecture includes an external facing service using TLS, mutual TLS for service communication, and web identity federation for accessing AWS services
• Two approaches are presented: a simple web service and a service mesh approach using Istio and OPA
• Data flow diagrams are essential for threat modeling and can be used to apply STRIDE to individual communications
• Prototyping early helps to understand technology integration and potential issues
• The presentation includes a relevant anecdote about a last-minute issue with AWS policies on S3 buckets

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• The need for companies to maintain strict compliance with data privacy regulations is increasing, making a multi-cloud strategy the most effective and efficient approach.
• Multi-cloud strategy offers improved security, better failover options, enhanced disaster recovery, and improved flexibility and scalability.
• The challenges of managing multi-container clusters include workload fragmentation, resource scheduling, and vendor locking.
• Kubernetes Commander is an open and cloud-native multi-cloud orchestration engine that provides a central control line for managing multi-cloud clusters.
• Easter is a service mesh project that facilitates inter-cloud communication by securely encrypting traffic and providing DNS resolution.
• Flat network and different network models have their own advantages and challenges for implementing a multi-cloud strategy.