Answer
Microservices scale horizontally by adding instances. Orchestrators like Kubernetes distribute traffic across instances using load balancing.
Quick Answer
Microservices scale horizontally - you just run more instances of the service that's the bottleneck. Because services are independent, you don't need to scale the whole app. Combined with auto-scaling (Kubernetes HPA triggers on CPU/memory/custom metrics), the system adjusts automatically to traffic spikes and drops.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ