Reuse Buy or Build Components and Services 8

Reuse, Buy, or Build: Components and Services 8 th May 2009 Phil Rowland, Capgemini Simon Thurman, Microsoft

Introduction • Highlight and discuss the considerations required to reuse, buy or build components and services in order to deliver the required solution to the business. • We’ve identified three areas we think are worthy of discussion; an Evaluation Framework, Forces and a Balancing Act.

Assertion 1 Reuse, Buy, then Build

Assertion 2 It’s a Business Decision

Assessment Structure • Delivery and running costs. • Contract management. • Depreciating of assets. • Internal or external provision. • Market share and differentiation. • Growth. • Strategic change management. • Managed portfolio. Strategic • Governance. • Change management. • Skills. • Support and maintenance. Operational Business • Technology choice. • Interoperability / Integration • Repository of assets. Technical

Assessment Framework Reuse Positive Negative Considerations Delivery Time Requirements Compromise Maintenance Support Governance Requirements Compromise Maintenance Complexity Cost Integration Delivery Time Complexity Cost Maturity Skill Core Complexity Cost Maturity Buy Delivery Time Support Maturity Build Requirements Match Maintenance Support Consolidation Culture Customisation

Forces Sustainability Cost Decision Time Quality

SMART Force Examples

Balancing Act Business Technical Requirements Maintenance Cost Support Delivery Time Maturity Business Drivers Complexity

Fit With Services • Evaluation Framework – Reuse • Probably less interesting, because services as highly likely to be reused – Buy • Integration, the same priority • Customisation, should be less of a priority – Build • Skill, the same priority • Core , the same priority – Additional dimension to the Evaluation Framework • Service Level Agreement • Forces and Balancing Act – Apply to services in the same way they do with components

Conclusion • Our experiences with components fits with Services • It depends. . . – There may be multiple correct answers • However. . . – Decision should be: • Transparent • Communicable