L1 - Cloud Introduction Flashcards
ITaaS
IT as a Service:
- users can rent the basic necessities to build a virtual data center from a virtual storefront
3 Cloud Service Models
IaaS, PaaS, SaaS
What does IaaS offer?
Virtualization of servers, storage, networking
What does PaaS offer?
- application infrastructure services: databases, execution environments, integrated development platforms
- serverless computing
- scalable application middleware (databases, file systems)
Examples of PaaS
MS Azure: Microservice Fabric
Amazon: Faas
Google: Application Engine
SaaS offers
- consumer or industrial applications to individual or enterprise users
technologies: - standard applications as well as cloud native applications
- multi-tenancy
Examples of SaaS
- Salesforce
- Dropbox
4 Deployment Models
Public Cloud
Community Cloud
Private Cloud
Hybrid Cloud
What is the public cloud?
IT resources are provisioned over the internet via Web applications or services from an off-site third-party provider
What is the community cloud?
shared by a group of organizations
What is the private cloud?
- IT services are offered via private networks for the exclusive use of one client, providing full control over data, security, and quality of service
Cloud Definition
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort. Build of 3 service models and 4 deployment models.
5 essential characteristics of the cloud
- on-demand self-service
- broad network access
- resource pooling
- rapid elasticity
- measured service
What is on-demand self-service about?
A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed.
What is broad network access about?
Capabilities are available over the network and accessed through standard mechanisms that promote use by heterogeneous thin or thick client platforms (mobile phones, laptops)