Building Servers in the Sky Tutorial

• cloud computing: "the cloud" refers to servers that are accessed over the Internet, and the software/databases that run on those servers. it is internet based computing - resources are provided as a service throuhg the internet
• renting: used to sum up how cloud resources are used
• importance of cloud computing

  • responsible for features of modern technology such as on-demand data access, global networks, advances in AI
  • cloud technology is one of the most influential advancements in the last several decades
  • worldwide spending by businesses on cloud computing infrastructure is forecast to top $1 trillion
• cloud computing misconception

  • people sometimes wrongly confuse cloud computing with online storage
  • cloud services:
  • virtual servers
  • databases
  • networking
  • applications
• cloud computing importance in business:

  • cloud technology is incorporated into every process or task we carry out daily
• prior to the cloud:

  • organizations had to own and operate their own servers to facilitate the compute and data storage necessary to run their business
  • capital costs were high to build data-centres
  • operational costs to manage data-centres were even higher
  • as an organization, everything in the IT environment was their responsibility
• resource pooling: dynamic allocation and sharing of computing resources among multiple users
• virtualization: running multiple virtual machines simultaneously on a single machine
• elasticity: freely scaling up/down as computing needs increase/decrease
• automatic deployment: users can spin up compute resources for almost any type of workload on demand
• metered billing: this is the idea of pay per use or pay as you go in cloud computing
• public cloud:

  • publicly shared virtualized resources
  • supports multiple customers
  • support connectivity over the internet
  • suited for less confidential information
• private cloud:

  • privately shared virtualized resources
  • cluster of dedicated customers
  • connectivity over internet, fibre, and private network
  • suited for secure confidential information and core systems
• hybrid cloud:

  • the combination of private and public cloud whereby specific resources are used in public cloud while others are used in private cloud
• cloud advantages:

  • scalability - scale resources up or down based on demand
  • cost efficiency - eliminates need for hardware costs
  • accessibility - data and applications can be accessed anywhere with internet
  • flexibility - various tools and services to meet diverse business needs
  • reliability and redundancy
  • speed and agility
• cloud disadvantages:

  • security concerns
  • downtime
  • limited hardware control and customization
  • vendor lock in