EFS Standard:
Designed for high-throughput, low-latency workloads.
Good for web servers, application hosting, DevOps tools, etc.
EFS IA:
Lower storage cost (up to 92% cheaper than Standard).
Good for backups, older logs, or rarely accessed files.
Still accessible instantly, but with higher latency.
No EFS Archive Tier:
If you need true archival storage with high latency but ultra-low cost, use:
Amazon S3 Glacier (~minutes to hours latency)
Amazon S3 Glacier Deep Archive (~12 hours latency)