A company stores user data in AWS that is used continuously, with peak usage during business hours. Access patterns vary and some data may not be used for months. A solutions architect must choose a cost-effective storage solution that provides the highest level of durability while maintaining high availability. Which storage solution meets these requirements?

Amazon S3 Intelligent-Tiering is the most cost-effective solution for data with unknown or changing access patterns. It automatically moves objects between frequent and infrequent access tiers based on access patterns, optimizing costs while maintaining high availability and durability. S3 Standard offers high availability and durability but is not cost-optimized for varying access patterns. S3 Glacier Deep Archive is designed for long-term archival with retrieval times in hours, making it unsuitable for continuous use with peak usage. S3 One Zone-IA is cost-effective for infrequently accessed data but stores data in a single Availability Zone, compromising high availability compared to S3 Intelligent-Tiering, which uses multiple AZs.