Cloud Types
Public Cloud:
Here the vendors allow public to use depending on their demand. The customers cannot access hardware or any back end . But they can know in which region the service resides . The vendors will maintain the service . Again the customers can access it anyone round the world if he/she has an internet connection. For example, people use azure portal(vendor) to work with their servicesPrivate Cloud: The resources are not shared to general public. A company creates a their service and keeps it with it's organization and everything is done by them . For example, Microsoft manages their team and company by this private cloud.
Hybrid Cloud : Mixed of both Public and Private
Some terms:
- On demand resourcing: When you need something, you will get that. It is like filling a form and submitting it and then get a verification mail
- Consumption based: You pay what you use
- Scalable & agility: Scaling "up and down" to increase or decrease computer powers and to "in and out" means adding more vms or removing them
- Economy of scale: Cost is reduced for companies
- High available: Very available throughout regions
- Flexible & elasticity: You can choose how much and how long you need things without being worried
- Shared infrastructure: Reduces space for hardware
- Security: Very much secured
Cloud Service Models
- SaaS: You can use the service but cannot change anything. For example, Google Gmail
- PaaS: You can get access to the operating system, software but not Vms or others.
- IaaS: Can access software, operating system , cm but not hardware.
Offers highest level of customization .
- DRaaS (Disaster recovery as service)
- CaaS (Communication recovery as service)
- MaaS ( Monitoring as a service)
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