For financial data that is archived for tax purposes and not accessed daily, which data tier is most appropriate?

The most appropriate data tier for financial data that is archived for tax purposes and not accessed daily would be Tier 3. This tier is designed for data that is infrequently accessed but still needs to be retained and stored. It typically provides a balance between cost efficiency and accessibility, making it ideal for long-term archival use where immediate retrieval is not a priority.

In the context of cloud storage, Tier 3 resources are generally lower in cost and optimized for durability and long-term retention rather than speed of access. This aligns well with the needs of financial data that must be kept for compliance reasons but is not needed on a daily basis.

Higher tiers, such as Tier 1 and Tier 2, are meant for frequently accessed and critical data, making them more expensive and less suitable for archival purposes where access is limited. Tier 4 might offer even lower costs, but it could have significant limitations on retrieval speed or availability, which again would make it less desirable for data that, while infrequently accessed, must still be retrievable when needed.