Amazon Connect: Single Instance or Multiple Instances?

Single instance of Amazon Connect (including single ACGR pair)

Best For

A centralized contact center operation with shared infrastructure and unified customer experience.

Pros

• Lower operational overhead – Manage/maintain single system, less duplication of setup/config.

• Centralized management – Unified metrics, reporting, queues, routing profiles, users, etc.

• Consistent customer experience – Common IVR, flows, and settings across teams.

Cons

• Data/tenant isolation design – Data isolation across business units, brands, or regions must be designed.

• Single Geographic Location – Latency can be high in regions far away from the instance.

• Service Quota Management – Service quota management can be more challenging due to difficulty in anticipating usage and growth across multiple business units.

Multiple instances of Amazon Connect

Best For

Enterprises with geographic, regulatory, or security requirements infeasible to implement in single-region (telephony, data segregation, latency due to physical distance, etc.).

Pros

• Strong isolation – Each BU or region can have its own agents, routing, reporting. Isolation is required for agents in India, South Korea, and South Africa.

• Tailored configurations – Flows, prompts, integrations can be customized per instance.

• Simpler data residency – Can be useful for compliance in multinational organizations.

• Reduced blast radius – An issue in one instance doesn't affect others.

• Geographic proximity – Regions can be chosen to keep local telephony traffic local.

Cons

• Higher management overhead – Need to maintain and update multiple environments.

• Fragmented reporting – Multi-region reporting currently needs to be built.

• Increased costs – Each instance may require duplicate resources (Lambda, Amazon Lex, API).

• Inconsistent user experience – Unless strictly governed, each instance may drift in flow design, customer experience, customer security models, etc.

Summary

The decision of single- vs. multiple-instance architecture is nuanced, and highly dependent on the nature of the customer's requirements. Considering the scalability, customizability, programmability, and security of Amazon Connect, we generally recommend single-instance Amazon Connect architectures (including a single Amazon Connect Global Resiliency pair) in the absence of compelling requirements requiring multiple regions.