Course Welcome - Introduction to Cloud

 

There is Six Modules to finish this Course. 

 

First Module is Cloud. 

 

I wish I could earn $10M in ten years and then go back to my hometown. 

 

 

IaaS = leasing

PaaS = renting

SaaS = taxi 

 

Paas. >>. High level of Abstraction.  

        Support Services and APIs  : simplify the job of developers 

 

Advantage of PaaS : Scalability, Faster time to market , Greater Agility and Innovation 

 

 

Risks of PaaS : Information security threats, dependency, lack conrol over changes in strategy 

 

SaaS:

        Multitenant Architecture

        Use Cases

        Concerns : data security         

 

This is chance that comes once in a lifetime 

 

 

Public Cloud Benefits

virtualized multi-tenant architecturing enabling tenants or users to share computing resources 

 

 

    Exclusively used by a single organization 

    VPC : Virtual Private Cloud  >> an external cloud that offers a private, secure, computing environment in a shared  public cloud 

 

 

    Benefits of private clouds : controlled by internal IT, reduced cost, better scalability , security, agility 

 

 

Hybrid Cloud 

 

    Connects an organizations' on-premise 

    Interoperable , Scalable, Portable 

 

    Composite MultiCloud, Hybrid Multicloud, Hynrid monocloud 

    

 

 

 

virtual machine

dedicated host 

bard metal servers : can take longer to provision, minutes to hours, more expensive than VMs , 

 

 

 

 

bare metal.  vs. Onpremises.  vs  dedicated host 

 

 

 

 

 

Containers

[VMs]

Hypervisor is actually what allows us to spin up VMs.

 

[containers] 

manifest file -> image -> container 

 

 

 

 

 

Cloud Storage 

persistence : what happens to the storage once the compute node it is attached to is terminated 

 

IOPS

 

Persistance 

 

Snapshot 

 

Object Storage : cheapest, slowest(read&write) , infinite in size 

File Storage : attached to a compute node to store data , less expensive, 

Block Storage : breaks files into chunks of data , 

 

 

 

Object Storage :    effectively infinite ,  large amounts of unstructure data   ,   

resilience options

use case : text files, audio, vidio, IoT, VM images, Backup Files, Data Archives 

> not suitible for database 

 

Object Storage- Tiers and APIs 

-standrad Tier  : 

-Vault /Archive Tier : 

-Cold Vault Tier : only once, twice a year 

-Automatic archiving rules 

 

object storage - api - s3(aws) - http based(RESTful) - put/get 

Effective solution for Backup & Disaster 

 

 

Hybrid Multi-Cloud, Microservices, and Serverless 

Cloud Native Applications

DevOps : Applies Agile and Lean thinking principles to all stackholders 

Application Modernization 

 

Cloud Security and Monitoring 

Cloud Encryption : (Server-side) Generate and manage keys on Cloud  

(Client-Side) Occurs before data is sent to cloud. Cloud providers cannot decrypt hosted data 

 

 

Career Opportunities and Job Roles in Cloud Computing