With the entire software platform being controlled by the cloud provider, the standardization of configurations and versioning is done automatically for the cloud customer. This alleviates the customer's need to track upgrades and releases for its own systems and development; instead, the onus is on the cloud provider.
Although licensing is the responsibility of the cloud customer within SaaS, it does not have an impact on compliance requirements. Within SaaS, development and maintenance of the system are solely the responsibility of the cloud provider.

Explanation
Orchestration is the programmatic means of managing and coordinating activities within a cloud environment and allowing for a commensurate level of automation and self-service. Provisioning, allocation, and automation are all components of orchestration, but none refers to the overall concept.

Regardless of which cloud-hosting model is used, the cloud customer always has sole responsibility for the data and its security.

The Uptime Institute publishes the most widely known and used standard for data center topologies and tiers.
The National Fire Protection Association (NFPA) publishes a broad range of fire safety and design standards for many different types of facilities. Building Industry Consulting Services International (BICSI) issues certifications for data center cabling. The International Data Center Authority (IDCA) offers the Infinity Paradigm, which takes a macro-level approach to data center design.