We leveraged our well-defined, phased and iterative approach to migrate applications to AWS Cloud. It comprised four phases:
We assisted with overall program management office, managing all aspects of strategy, program governance, and benefits realization by implementing infrastructure transformation PMO (at a portfolio level) of in-progress migration/sunset plans across groups. We performed identification of target state of 1000+ applications while focusing on applications that included EOL/EOS components (Windows 2003 and Solaris). During this process, we also cleansed and updated CMDB based on portfolio analysis findings. We reviewed and enhanced cloud architecture and platform components. Furthermore, we accelerated continuous integration and deployments process by recommending enterprise tools to DevOps team and assisted them by implementing platform capabilities
We performed macro analysis of applications leveraging a proven cloud readiness assessment framework based on Business Value, IT Efficiency and Cloud Suitability. Following which, we performed micro-analysis of a number of applications leveraging structured migration approach, repeatable process and re-usable assets limiting the cost of transformation. For each of these applications, we developed an understanding of current state architecture and defined cloud architecture based on patterns developed during macro analysis leveraging AWS Services like EC2, ELB, Route 53, RDS, SQS, SNS, and Containers etc. As part of Cloud Operating Model workstream, we provided recommendations on enterprise cloud security guidelines and enterprise cloud DevOps tools/methodologies.
During the Migration phase, we implemented cloud migrations using standard DevOps technology stacks such as Cloud Formation, Chef, Jenkins, GitHub, and Artifactory. We used many security measures offered by AWS services such as security groups, SSL, encrypted volumes, IAM, MFA to implement a secure architecture. Additionally, we created and streamlined standard DevOps scripts/cookbooks to create standard reusable assets. To ensure migration success, we provided effective program coordination across multiple LOBs (Line of Business) including management of server decommissions across the estate. With these successful migrations, we not only gained portfolio, process, and organizational understanding but also the confidence of application teams. This was instrumental in smooth change management.
Now, it is time to scale. We have planned to perform mass migration to accelerate the infrastructure transformation. With infrastructure moving on the cloud, it is essential to keep a check on it. Our team is involved in cost optimization through policies, processes and monitoring. We are not only identifying under-utilized resources in existing infrastructure but also creating automation policies to constantly check and ensure cost optimization and security governance in future.