Fundamentals

Main topics:

  • Creating an account

  • Examining traditional data center challenges:

    • Large up-front investment
    • Difficult to predict future traffic or demand
    • Slow deploy of new data centers and servers
    • Maintain data centers is expensive
    • You own all security and compliance burden with all data centers

  • Benefits of cloud computing

    • Trade capital expense for variable expenses: you pay what you use
    • Scaling
    • Stop to guess future needed capacity, traffic
    • Speed and agility
    • Stop spend money for maintenance
    • Go global in minutes. Deploy new data centers in any part of the world
    • Elasticity
    • Realibility: failover,
    • Agility:
      • Low cost of trying new business ideas
      • Reduces time to maintain infrastructure
      • Reduces risk for orgs aroud security and compliance
      • Provides access to emerging techs

  • What is cloud computing:

It is the on-demand delivery of compute power, database storage, applications, and other IT resources through a cloud services platform via the internet with pat-as-you-go pricing.

  • Types of clouds

    • Iaas you can full/maximun control of your infra
    • SaaS you provide a software as a service, you do not worry about infra
    • PaaS: Provide a plataform where you put your code and run it.

  • Cloud deployment models:

    • Public cloud: such as AWS(pay as you go), GCP
    • On-Premises: Private cloud in a private data center
    • Hybrid: Use public and on-prem clouds

AWS Global infrastrucute

Three types of infra:

Regions

  • It is a specific gographic region
  • Each region has a CLUSTER of data center
  • AWS has 22 launched regions

Availability Zones

  • It is one or more data centers
  • One region has Multiple avalability zones
  • Minimun: one reqion has minimun two availability zones
  • Each availability zone has at least ONE data center
  • Therefore, one region has at least two data centers
  • Each availability zone is located within the geographical area of the AWS region
  • Availability zones have redundant power, netowrking, and connectivity.
  • Globaly, there are 69 availability zones

What is availability:

Extent to whcih an application is fulfiling its intended business purpose. Applications that are highly-available are built in a manner where a single failure wont lessen the application’s ability to be fully operational

The first one is availability base on business needs. The second case is 100% availability, high availability

Naming syntax

For example: us-east-2b Where: - us = area - east = sub-area - 2 = Nubmer that identifies the region in that area - b = availabitlity zone

From here: - the REGION NAME = us-east-2 - The availability zone = us-east-2b

AWS regions table

Edge locations

  • Part of a global content delivery network CDN
  • These support only TWO services:
    • Amazon CLoudFront: which is AWS CDN
    • Amazon Route 53: which is AWS DNS service
    • There are more than 200 different location with edge locations
    • It is the most predominant and common infra in AWS
    • Edge locations server content from location that are closer to users

In practice

  • The AWs global infra : https://infrastructure.aws/

  • IN this link edge location = points of presence

  • If we need to store or service in multiple geographical areas/regions, then AWS region is needed

  • If the need is to optimize access to user content around the world, then AWS edge loction is needed.

  • If the need is to ensure availability, then AWS availability zones is needed.

Economics

Difference between data center and cloud

Capitalized Expenditure (capEx): When building a data center, an organizatio invests in upfront costs for the building , servers, and supporting equipment. This type of expense to attain a fixed asset is referred to as a Capitalized Expenditure or CapEx

Operating Expenditure( OPEX): The regular day to day expenses of a business are considered Operating Expenditure or OpEx. After the initial build of a data center, ongiong connectivity, utility, and maintencance costs would be considered OpEx.

  • The problem with data centers is that at the beginning there is a “unused capacity " and just before increasing the capacity, there is a “demand over capacity” that forces to increase the size of the data centere.
  • During the “deman over capacity” many users can not use our service because our infrastrcuture capacite reach its limits.

Data center capacity Cloudl capacity Costs data center Data center capacity

Costs in AWS

  • Use the “AWS cost explorer " tool, an interface for:

    • Provides breakdown per service and cost tag
    • Provides prediction for next three months of costs
    • GIve recommendation for cost optimization
    • Get access via API

  • “AWS budgets”: Utilizes data from AWS cost explorer to plan and track your usage across AWS services. It can track cost per serbice , serbice usage, reserved instance utilzization, and coverage, and Saving Pans utilizion and coverage.

  • AWS TCO calculator: Estimates what could be saved by using cloud.

  • AWS Simply Monthly calculator: Estaimtes costs of running specific AWS infra.

  • AWS resource tags:

    • Tags are metadata attached to specific AWS resources. For example: webserver tag include all webservers.
    • Common uses cases include department, env, or project.
    • Tag include a name and a valur
    • Costa allocation reports: includes costs grouped by tags
    • You can use tags in the AWS explorer

  • AWS organization:

    • Allows you to manage many account under one master acount
    • It provides a consolidate billing for those account in the organization.
    • Enables organizations to centralize logging and security standards across accounts.

AWS TCO calculator

  • TCO = Total cost ownership

  • Compares running your workload in the data center versus in AWS

  • WIth TCO you can:

    • Estamate costs for a org to move to the cloud
    • Download a summary report

  • Location: awstcocalculator.com

AWS Simple Monthly Calculator

  • Estimates the cost of running your workload in AWS, with no comparison
  • Link: calculator.s3.amazonaws.com

Cost explorer

  • Login to “console.aws.amazon.com” -> Click in your name -> click " My billing dashboard”. Then Click on “cost explorer” and then “Launch cost explorer”

  • The cost explorer initially shows: current month cost and forecasted month end cost.

  • To get more details in the dashboard, click “Explore costs”

  • You can download CSV file

Scenarios

  • Case 1: company with many departments. Finance is asking to hav a separate costs between departments. Currently all resources are included within a single AWS account.

    • IN this case we can use TAGS. Create a tag per department.

  • Case 2: Company think to move to the cloud, but they want to know if this will save them money:

    • The solution is use TCO calculator and provide the report to the stakeholders

  • Case 3: Company is trying to know saving costs if they move a web service to the cloud.

    • Use Simple MOnthly calculator

Suport AWS infra

  • Supporting tools:

    • AWS suuport

      • Enables support for AWS resources for workloags running in the cloud
      • Provided in different tiers based on need and scope
      • Include tools to provide automated answers and recommendations

    • AWS personal health dashboard

      Provides alerts and remediation guidance when AWS is experiencing evnts that may impact you. For example,when there will be a outage in your region.

    • AWS tursted advisor

      • Check your AWS usage against best practices
      • Accessed from AWS console
      • Different checks are provided base on the AWS support plan tier
      • All AWS customer get access to seven core checks, which include:
        • Cost Optimization
        • Performance
        • Security
        • Fault tolerance
        • Service Limits

AWS Support plan tiers differences:

Main four plans difference includes:

  • Communication method
  • Response time
  • Cost
  • Type of guidance offered

Main plans:

  • Basic support:

    • To all customers
    • Access to trusted advisor ( 7 core checks)
    • 24x7 accesss to customer service: docs, forum, and white papers. No engineers
    • Access to AWS personal health dashboard
    • No monthly cost

  • Developer support:

    • Include all from the basic support
    • Email access support engineers for business
    • Limited to 1 primary contact
    • Start at $29 per month, but tied to AWS usage

  • Business support:

    • Include all from developer support
    • Full set of Trusted Advisor checks
    • 24x7 phone, email and chat access support engineers
    • Unlimited contacts
    • PRovided thrid party software support
    • Starts at $100 per month, tied to AWS usage

  • Enterprise support:

    • Includes all from business support
    • Dedicate technical account manager
    • Include a concierge support team
    • start from 15000$ per month, tied to AWS usage

There is a importat part called SUPPORT RESPONSE TIME

Support resopnse time

In here we have the following categories:

General guidance = General question to be answer System impaired = when somethng is not working as it should Production system impaired = Production system that is not performing at its desired capacity. Production system down = Production system that is completely un-functinal Business-critical system down = Core system for an organization that is completly non functional

Trusted advisor tool

Trusted advisor tool

  • LInk: consoel.aws.amazon.com
    • Review recommendations
    • Type “trsuted advisor” in “find SERvices2

Personal health dashboard

Persona health board

Infra support scenarios

  • case 1: One workload is cirtical and requirest 24 hours call support a day.
    • The most effective criteria is Business support
  • case 2: The company needs to be able to call , text and email support if an issue occurs. Also needs response from support within 15 minutes.
    • Here applies: Enterprise support
  • Case 3: a developer does not need technical support, and he has access to trusted advisor core checks.
    • Here Basic support is enough

Review

to review