A company stores objects in Amazon S3 Standard. A solutions architect finds that 75% of the data is rarely accessed after 30 days. The company requires all data to remain immediately accessible with the same high availability and resiliency, while minimizing storage costs. Which storage solution meets these requirements?

S3 Standard-Infrequent Access (S3 Standard-IA) is the correct choice because it offers lower storage costs compared to S3 Standard, while maintaining the same high availability, resiliency, and immediate accessibility. The requirement to keep data immediately accessible rules out S3 Glacier Deep Archive, which has retrieval delays. Moving data to S3 Standard-IA after 30 days aligns with the finding that 75% of data is rarely accessed after that period. S3 One Zone-Infrequent Access (S3 One Zone-IA) is incorrect because it stores data in a single Availability Zone, which does not meet the requirement for the same high availability and resiliency as S3 Standard, which is multi-AZ. Moving data to S3 One Zone-IA immediately is also incorrect for the same reason regarding resiliency and because the access pattern indicates a 30-day threshold for infrequent access.