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Migrating to AWS
- 1. AWS Migration Michael Brosnahan Solution Architect, NZ Post Group @mikebros
- 2. Introduction Me: ❏ Solution Architect Online, Mobility, Cloud Computing, Integration. This Presentation: ❏ Not about AWS technology ❏ Focus on business benefit and impact of moving to AWS ❏ Assume basic knowledge of AWS
- 5. Considerations before migration There are many benefits... ...But, also a number of issues that need to be addressed
- 6. Issues that need to be addressed Most are not technical - Many are emotive Moving an organisation to AWS will depend on the balance between:
- 7. Benefits of Migrating to AWS ❏ Cost out ❏ Support simplification - flexibility & reduced cost ❏ Scalability ❏ Robustness ❏ Security
- 8. Cost Out ❏ Cost Out is the headline when business casing an AWS migration ➢ >50% saving in operational cost ❏ Savings come from: ➢ Lower resource costs ➢ Pay for what you use ➢ Simpler support process
- 11. ❏ There is an API for everything ❏ Scripted Deployments ➢ Using tools, such as AWS CloudFormation or Puppet ❏ Deployment process should be repeatable ❏ Design for robust, self-healing architecture ➢ Reduce manual intervention and call outs ❏ Patching process ➢ Consider rebuilding servers with the patched OS rather than applying patch to existing servers Support simplification
- 12. Treat the servers as cattle, not as pets Support simplification “...It takes a family of three to care for a single puppy, but a few cowboys can drive tens of thousands of cows over great distances, all while drinking whiskey.”" http://goo.gl/uTXWBX
- 13. Scalability ❏ “Unlimited” resource availability ❏ Scale as required - no upfront purchase or provisioning ❏ Vertically ➢ When demand is linear and predictable ➢ Increase instance size ➢ Less re-architecting required ❏ Horizontally ➢ When load is unpredictable ➢ When load is global
- 14. ❏ Elastic Load Balancing ➢ Distributes incoming traffic over instances ❏ Auto-Scaling ➢ Enabled by monitoring ➢ Rules base automatic scaling of capability - up and down ❏ Relational Database Service ➢ Scale size and provisioned IOPS ➢ Add read replicas ❏ PaaS - Elastic Beanstalk ➢ Provide the application code, AWS will manage the platform and container ➢ Node.js, PHP and Python, Ruby, .NET, and Tomcat for Java Scalability
- 15. ❏ Inherent robustness ➢ S3 claims 11 9s durability over a given year ➢ 1,000,000 objects in S3, expect to lose an object every 10,000 years ❏ Multiple Availability Zones ➢ Load balance your service over 2 AZ for HA ❏ Self Healing ➢ ELB will detect a sick server and avoid it ➢ Script to create a replacement instance Robustness
- 16. ❏ High security data centres ❏ Fine grained IAM ➢ Control level of access users have to AWS services ➢ Multifactor Authentication ❏ Private subnets - Virtual Private Cloud ❏ Direct Connect options ❏ Cloud watch - audit trail ❏ Many security standards and certifications ❏ Encrypted Data Storage ❏ Dedicated hardware Security
- 17. Challenges and Risk of Migration ❏ Architectural ❏ Network connectivity ❏ User concerns ❏ Legal ❏ Privacy ❏ Security ❏ Commercial Risks ❏ Sustainability
- 20. Network Connectivity ❏ Dependence on the Southern Cross cable
- 21. User Concerns ❏ Public Concerns ➢ No concern about the cloud ➢ Showed a understanding of the global nature of the internet ➢ Put faith in the brand fronting the service ➢ Challenge is to maintain this respect for the brand ❏ Concerns of Companies ➢ High level of concern where their data and documents are stored ➢ Not comfortable with “the cloud"
- 22. Legal ❏ IRD tax documents must be stored in NZ ➢ SPS13/01 - you can get an exemption ➢ A number of organisations already have ✓ MYOB ✓ Xero ✓ Brookers Limited ✓ CargoWise NZ Limited ❏ Regulations around other information categories ➢ e.g. Health
- 23. Privacy ❏ Privacy Act ➢ If you hold personal information, you have a legal obligation to protect it whether it is… ✓ on premise ✓ in a shared New Zealand datacentre ✓ or offshore ❏ Loss of trust is loss of business. ❏ Difficulty enforcing NZ Privacy law against a cloud provider ❏ Patriot Act - Information disclosure to US Government - they have other ways to get the data!
- 24. ❏ “Didn’t you say Security was a benefit?” ❏ Yes, but… ➢ If your data is in a Public Cloud, it is on the internet ➢ The perception is that this is less secure than on premise ➢ And this is the reality, unless you implement appropriate security controls ❏ The Cloud security approach is a bit different ➢ May not be behind your enterprise firewalls (could be) ➢ Trust is extended into another organisation Security
- 25. ❏ Based on the standard T&Cs ➢ Suspension of service - 90 notice of termination ➢ Governed by U.S. law ➢ No indemnity offered by IP breach from technology provided by AWS ❏ You may get some of these changed, but likely to have to accept these risks ❏ Vendor lock-in Commercial Risks
- 26. Sustainability ❏ Resource virtualisation ➢ Energy and resource efficiencies ➢ Single physical server to run multiple virtual servers ➢ Reduces data centre space - reduces e-waste footprint ❏ Elasticity ➢ Rapid provisioning, scaling workloads ➢ Minimise server use based on load ➢ Pay as you go encourages efficiency ❏ Multitenancy ➢ Balance work loads between consumers
- 27. Sustainability Cloud Provider Renewable Energy Claims Clean Energy Index AWS None 14% Google Carbon Neutral, $1B investment 44% Rackspace Sourcing consideration 32% Microsoft Carbon Neutral 22% Source: http://goo.gl/6SDUxY
- 28. Sustainability Australian Power Station New Zealand Power Station 9.6% Renewable 72.5% Renewable
- 29. Summary ❏ Many benefits to moving to AWS ➢ But, also many issues that need consideration ❏ Moving an organisation to AWS will depend on the balance between: ➢ The Enterprise’s Drivers for the benefits ➢ The Enterprise’s tolerance for risk and ability to manage the risks
- 30. Questions?