In particular, the ‘Server-centric’ approach (listed first in the table) is preferred by Enterprises because of its ‘measurability’; i.e. - the metrics and KPIs are easy to report. The infrastructure team, that owns ‘end of life’ programs, uses this approach with native skills and processes.
The parameters in server-centric assessment are:
- Virtualization status
- Environment (Prod, Test, Dev)
- Ability to tether applications with tools
- Data Movement Patterns
- Compliance of Cloud platform
The ‘Application-centric’ assessment calls for clarity of methodology and the KPIs are complex to measure. The application dependencies create complexity between servers, applications and other elements such as ownership. It is not uncommon to see orphaned applications in Enterprises.
The parameters of assessment of Applications are:
- Application Architecture
- Application Impact Points for Cloud
- Database/Data Migrations
- Application/Data Compliance
- Application Complexity
To contain risks, Automation is important, and traditional assessment covers it partially, with parameters such as:
- Coverage of the tools
- Cost & Support
The challenges of assessing impact points for application architecture include many definitions of complexity of the ‘as-is’ architecture (not the ‘to-be’ ones) conducted by disparate groups.
Other assessment methods such as Business Centric, PoC Centric, SaaS Vendor centric, and Cloud Provider centric contribute different outcomes to the overall assessment.
Need for a Newer Methodology
The divergence of viewpoints makes the Enterprises carry out multiple cycles of strategic evaluations of Cloud.
A newer methodology is required for stakeholders to set consistent priorities and this discussion suggests five consisting artefacts as standard.
- Benefits classifcation model (across groups in Enterprise).
- Reference Architecture(s)
- Tools Guidance
- Integrated Consumption Model (License, Operations)
- Assessment Methodology
The categories of stakeholders who need to be brought in a cohesive initiative are:
- Infrastructure Directors
- Applications Directors
- Advisors, Vendors, Providers
The initiative calls for not only revamping the traditional way of looking at the portfolio, but also to create five artefacts tailored to each organization.
Aretfacts 1: Benefits Classification models
Benefits Classification models (BCM) is an instrument to be invested upon by each enterprise, to consistently model and maximize beneifts across groups, with parameters and gudiance.