Session state for a citizen portal currently lives in memory on a single EC2 instance, blocking scale-out. What should the architect do?
Select an answer to reveal the explanation.
Short Explanation
If the session lives only in one server’s head, you cannot freely add or replace servers. Park sessions in DynamoDB or ElastiCache and let EC2 stay disposable. Bigger single boxes and sticky forever still leave a SPOF.
Full Explanation
Stateless compute with externalized session state in DynamoDB, ElastiCache, or similar managed stores enables horizontal scaling and instance replacement. Vertical scale alone, disabling Auto Scaling, or relying on ephemeral instance store for authoritative sessions keep state tied to individual hosts.