Cloud Migration & Multi-Cloud Flashcards

A systems integrator is asked to reduce egress costs in a multi-cloud setup. Which architectural approach is most effective?

Answer: Colocate compute with data to minimize cross-cloud data transfers

Keeping compute and the data it processes within the same cloud and region reduces expensive cross-provider egress charges.

What is the role of a Landing Zone in a cloud migration program?

Answer: A pre-configured, secure multi-account cloud environment that serves as the foundation for migrations

A Landing Zone establishes governance, networking, security, and account structure baselines before any workloads are migrated into the cloud.

Which protocol is commonly used to provide private, dedicated connectivity between an on-premises data center and a cloud provider, bypassing the public internet?

Answer: Dedicated leased line with BGP (e.g., AWS Direct Connect, Azure ExpressRoute)

Services like AWS Direct Connect and Azure ExpressRoute provide private, high-bandwidth connections that do not traverse the public internet, improving security and latency.

During cloud migration planning, a 'dependency on legacy middleware' is identified. Which approach best handles this constraint?

Answer: Encapsulate the middleware behind an API gateway and migrate workloads independently

Wrapping legacy middleware with an API gateway decouples dependent applications, allowing them to be migrated independently without blocking the program.

In a multi-cloud Kubernetes environment, which component is responsible for distributing traffic across clusters running on different cloud providers?

Answer: Global server load balancer (GSLB) or multi-cluster ingress

A Global Server Load Balancer or multi-cluster ingress controller routes traffic across clusters on different providers based on health, latency, or policy.

What distinguishes a 'pilot migration' from a full-scale migration wave?

Answer: A pilot migrates a small, representative set of workloads to validate processes before broader rollout

A pilot migration tests the end-to-end migration process on a limited scope, uncovering gaps in tooling, runbooks, and skills before scaling.

Which cloud-native service category replaces traditional message queues and enables event-driven integration between multi-cloud services?

Answer: Event streaming platforms (e.g., Kafka, AWS EventBridge)

Event streaming platforms decouple producers and consumers across cloud boundaries, enabling scalable, asynchronous integration in multi-cloud architectures.