**Table 1** Related services
Function	Related Service	Reference
IAM provides the following functions: User identity authentication IAM user permission management IAM agency configuration	Identity and Access Management (IAM)	Permissions Management Configuring User Permissions
CTS collects records of operations on OBS resources, facilitating querying, audits, and backtracking.	Cloud Trace Service (CTS)	Cloud Trace Service
SMN sends OBS related alarms and event notifications, and triggers workflows.	Simple Message Notification (SMN)	SMN-Enabled Event Notification
Tags are used to label and classify buckets in OBS.	Tag Management Service (TMS)	Tag Overview
KMS encrypts files uploaded to the OBS.	Key Management Service (KMS)	Server-Side Encryption Overview
DNS resolves domain names configured for static website hosting in OBS.	Domain Name Service (DNS)	Using a User-Defined Domain Name to Configure Static Website Hosting

The OBS can serve as a storage resource pool for other cloud services such as Relational Database Service (RDS) and Cloud Trace Service (CTS).

Related Services