Objects are written once and accessed frequently for 30 days, then rarely; retain them for 3 years at minimum cost. Which lifecycle policy should you implement?

The correct answer is to use Standard storage for 30 days, then move to Archive storage for 3 years. Standard storage is suitable for frequently accessed data due to its low access cost and high availability. After 30 days, when access becomes rare, transitioning to Archive storage is the most cost-effective solution for long-term retention (3 years) because it has the lowest storage cost, despite higher access costs and retrieval times. Nearline and Coldline storage tiers are designed for data accessed less frequently than Standard but more frequently than Archive, making them less optimal for the "rarely accessed" and "minimum cost" requirements over a 3-year period. Introducing intermediate tiers like Coldline for 1 year before Archive would increase overall costs without providing significant benefit given the access pattern.