A city standardizes how partners and internal services talk to the…

Question

A city standardizes how partners and internal services talk to the permit platform: partners need a synchronous HTTP contract, while internal services should react asynchronously. Which design matches?

Accepted Answer

Publish a REST API with Amazon API Gateway for external partners and use event buses or queues for asynchronous internal communication — Partners like a clean front door—REST through API Gateway. Inside city hall, pass notes with events and queues so teams aren’t glued together.

Answer

Expose only raw SQS queue URLs to external partners and require them to long-poll for every update

Answer

Require every internal service to call partners over public SSH tunnels with shared passwords

Answer

Replace both surfaces with a single tightly coupled EC2 fleet that partners RDP into

A city standardizes how partners and internal services talk to the permit platform: partners need a synchronous HTTP contract, while internal services should react asynchronously. Which design matches?

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