IAM provides the following functions:
Identity and Access Management (IAM)
Cloud Eye monitors OBS buckets, to collect statistics about the upload traffic, download traffic, the number of GET and PUT requests, the average Time to First Byte (TTFB) of GET requests, and the number of 4xx and 5xx errors.
CTS collects records of operations on OBS resources, facilitating querying, audits, and backtracking.
Cloud Trace Service (CTS)
SMN sends OBS related alarms and event notifications, and triggers workflows.
Simple Message Notification (SMN)
Tags are used to label and classify buckets in OBS.
Tag Management Service (TMS)
KMS encrypts files uploaded to the OBS.
Key Management Service (KMS)
DNS resolves domain names configured for static website hosting in OBS.
Domain Name Service (DNS)
OBS can serve as a storage resource pool for other cloud services such as Relational Database Service (RDS) and Cloud Trace Service (CTS).