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Greenlight enables growth through hosted desktops

About Greenlight Human Capital

  • Rapidly expanding with strong growth predictions
  • Sites and staff are geographically spread
  • Head office in Newcastle
  • Requirement for new offices
  • Application not scalable over WAN



This case study was presented at the Intro to the AWS Cloud event held in Newcastle on the 12th of November 2015.

The Challenge

  • Anywhere access
  • Platform independent (BYOD)
  • Secure and controlled
  • Legislative data retention requirements
  • Rapid scalability

Why Amazon Web Services

  • Needed to deliver a scalable hosted desktop solution
  • Solution needed to be redundant, fault tolerant, scalable and cost effective.
  • Enable long term backup and archival of data.
  • Proven and secure platform

The Solution

  • Built in AWS’s Sydney Region, leveraging Citrix’s XenApp and Google Apps technologies.

The Benefits

  • Scalability
  • Redundancy
  • Elastic cost
  • Elimination of Capital Expenditure (CAPEX)
  • Mobility


  • Rebuild and migrate
  • Incremental backup to S3 during migration
  • No “Lift and Shift”


  • SSL tunnel from client to server
  • Bastion host access
  • Strict lockout and password policies
  • All access is controlled via Active Directory
  • Automated management and auditing of log files
  • Restricted access via IAM (MFA)


  • Create a session host AMI
  • Utilise Group Policy
  • Build session Hosts in Worker-Groups
  • Leverage AWS SDK’s and API’s
  • Best practice guides and whitepapers

Next Step

  • Integrate with onsite services
  • Integrate with Amazon Workspaces
  • As a shared service model