7.4 Digital environments

• DaaS outsources most data storage, integration, and processing operations to the cloud.
• DaaS helps data be compatible, this is because it enables the transfer of data through a consistent medium
• One solution to keeping data compatible and portable is creating point to point transfers between supported systems
• The point to point solution for data portability has some flaws such as:

  Complex

  Expensive

  Needs maintenance
• Data warehouses are another solution to aid data portability, they store data from all systems and employ data mining and cleansing
• Data warehouses flaws:

  Redundant often

  Costly

  Ignores latency between systems at times
• Coherent management of a large and diverse fleet requires understanding of the attributes that effect the data across divisions
• An organisations data storage solution must be able to make consistent and timely decisions, using the data
• An organisations data storage solution must allow data to be shared across the various divisions and accessed whenever a division needs to. This means that:

  All divisions must be somehow connected

  Data must be consistently formatted

  Data must be transferrable
• DaaS is a data storage solution, handles the sourcing, management, and delivery (use) of data
• DaaS follow consistent, open, international standards, and is light weight as it uses web technology
• DaaS is secure and private as data is stored only at an authoritative source and never leaves the system
• DaaS allows the sharing, viewing, and accessing of data
• The DaaS solution is composed of the DaaS engine, what is the DaaS engine made up of?

  Provider

  Registry
• What is the provider in the DaaS solution?

  The thing that provides access to data
• What is the registry in the DaaS solution?

  The thing that stores the source of the data
• The provider is made up of what?

  An interface

  A library

  Mapping of the system
• The Provider parts are all accessed through web addresses
• The registry holds metadata such as where it is, what parts are available, how it can be accessed, and how is it integrated with the rest of the data
• Daas supports CRUD, what the hell is CRUD?


  Create, read, update, delete
• Even though data remains at the authoritative source in DaaS what can still with it?


  Used, re-used, and refined
• DaaS 4 main benefits are:

  Data security - centralised data source

  Compatibility - web-based

  Scalability - server based so easy to scale

  Versatility - software is versatile and can be used for numerous tasks
• DaaS 3 main issues are:

  Web based so can be vulnerable to mitm attacks

  Data is stored remotely therefore can be difficult to use with certain tools

  Expensive set-up cost
• Cloud sorcing is where organisations will outsource business processes to external entities (service providers). These subscribers (the orgs) pay for services like IaaS, and SaaS
• So cloud sorcing is just using other companies for cloud services instead of homebrewing your own solutions
• CLoud portability is how easy it is to transfer data, applications, etc from one service provider to another
• Service providers want to keep their subscribers so moving between platforms is rarely easy
• 4 main categories of cloud models:

  Public

  Private

  Community

  Hybrid
• THe public cloud model is:

  Used by a range of end users

  Can be accessed through most devices with an internet connection

  Hosted by one vendor

  Paid through subscription by end users
• The private cloud model are used by a single organisation, what else is it:

  Often held onsite

  Access is restricted by firewalls

  Organisation sets it up themself

  Must be maintained
• The community cloud model is:

  Designed and used by a group of organisations especially in one industry.

  Data is easily transferred between organisations that share the cloud

  Data never leaves the group of organisation as all data is stored in the same physical location, so very secure.
• The hybrid cloud model is:

  Mix of private and public for the best aspects

  Public cloud may be used for general puposes so that a smaller private cloud can be kept

  Still the benefits of security from the private cloud