The first stage of this was to propose a solution in AWS. Rebura recommended a multi-server approach, sat behind an application load balance for public facing applications (alongside MFA). There would be an RDS and AD extension from head office for authentication. The sage environment consists of four servers; an Application Server , a Web Server, a Database Server and an RDS server.
Web Server – For accessing the web client from head office and the internet – This would be a behind an application load balancer and in a private subnet. MFA to be switched on from inside the application.
Application Server – Private subnet on EC2
Database Server – Microsoft SQL Server Standard edition. After a costing exercise and due to some technical requirements from Sage the decision was made to go with SQL in EC2 with BYOL licensing.
Remote Desktop Server – Used for fat client access and administration to the other servers
Once Merlin had agreed with the SoW, Rebura contacted the relevant Account Manager at AWS and explained that Azure had been offering credits and investigate whether AWS could help in anyway. As always, AWS were hugely flexible and upon receipt of a SoW, were quickly able to turn around $10,000 credits for Merlin.