time/users 中的 AWS 可用性区域标签是否相同?

Are AWS availability zone labels the same across time/users?

我正在尝试将我的 AWS 实例与一个网站并置在一起,根据他们的说法,该网站托管在可用区 ap-southeast-1c 上。

我想知道 1c 称号是否随着时间的推移和跨用户稳定?我记得很久以前在某个地方读到它不是,但我不记得来源了。如果指定在 time/users 中不稳定,我如何确保我在同一可用区内托管?

创建实例时我有以下选择:

subnet-3dad4b75 | Default in ap-southeast-1b
subnet-bfaf02e6 | Default in ap-southeast-1c #the obvious choice, ONLY IF the 1c label is stable
subnet-dbc533bd | Default in ap-southeast-1a

随着时间的推移,它们是相同的,但不是跨 AWS 账户。来自 EC2 documentation:

To ensure that resources are distributed across the Availability Zones for a Region, we independently map Availability Zones to names for each AWS account. For example, the Availability Zone us-east-1a for your AWS account might not be the same location as us-east-1a for another AWS account.