Feature Matrix

Feature	Requirement	OCCI	EC2	EH	FS	GG	SC	CS	VM	??
Authentication via HTTP	Client compatibility
Authentication via request signing	Untrusted third-party requests
Ephemeral compute resources	Lightweight servers
Persistent compute resources	Stopped servers
Ephemeral storage resources	Temporary storage
Persistent storage resources	Permanent storage
Multiple storage resources	Complex architectures
Multiple network resources	Complex architectures
Static IPs	Internet-facing applications
Firewalling	Basic network security
Load balancing	Horizontal scalability
Billing	Business
Resource categories	Organisation of resources
Resource search	Finding resources
Resource tagging	Organisation of resources
Collections (pass-by-reference)	Enumeration
Collections (pass-by-value)	Serialisation

Legend

Notes

• Ephemeral means "destroyed when stopped"
• Persistent means "exists when stopped"
• Multiple network and storage resources means "per compute resource"

CloudServers

• Uses custom HTTP headers for authentication

EC2:

• Ephemeral and persistent storage provided by AMI and EBS respectively.
• Firewalling provides "poor man's private network"
• API returns all resources for a given account (unsuitable for many resources)

FlexiScale

• Uses dedicated login/logout functions over SOAP for authentication(?)

Attachments:

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