Infrastructure as a Service (IaaS)
Cloud service model providing virtualized computing resources over the internet such as servers,
storage, and networking
Platform as a Service (PaaS)
Cloud service model providing a platform allowing customers to develop, run, and manage
applications without managing infrastructure
Software as a Service (SaaS)
Cloud service model where applications are delivered over the internet and managed by a provider
Function as a Service (FaaS)
Serverless computing model that allows users to execute code in response to events without
managing servers
Shared Responsibility Model
Defines the responsibilities of cloud service providers and customers regarding security and
management
Availability Zones (AZs)
Isolated data centers within a cloud region that provide fault tolerance and high availability
, Regions
Geographic areas consisting of multiple availability zones for compliance and latency optimization
Disaster Recovery (DR)
Strategies and processes for restoring IT services and data after a catastrophic event
Recovery Time Objective (RTO)
Maximum acceptable amount of time to restore a service after a failure
Recovery Point Objective (RPO)
Maximum acceptable amount of data loss measured in time
Hot Site
Fully operational offsite backup facility for immediate failover
Warm Site
Partially equipped backup site requiring configuration during failover
Cloud service model providing virtualized computing resources over the internet such as servers,
storage, and networking
Platform as a Service (PaaS)
Cloud service model providing a platform allowing customers to develop, run, and manage
applications without managing infrastructure
Software as a Service (SaaS)
Cloud service model where applications are delivered over the internet and managed by a provider
Function as a Service (FaaS)
Serverless computing model that allows users to execute code in response to events without
managing servers
Shared Responsibility Model
Defines the responsibilities of cloud service providers and customers regarding security and
management
Availability Zones (AZs)
Isolated data centers within a cloud region that provide fault tolerance and high availability
, Regions
Geographic areas consisting of multiple availability zones for compliance and latency optimization
Disaster Recovery (DR)
Strategies and processes for restoring IT services and data after a catastrophic event
Recovery Time Objective (RTO)
Maximum acceptable amount of time to restore a service after a failure
Recovery Point Objective (RPO)
Maximum acceptable amount of data loss measured in time
Hot Site
Fully operational offsite backup facility for immediate failover
Warm Site
Partially equipped backup site requiring configuration during failover
