Develop architecture with a vision for the future - looking beyond simple connectivity and focusing more on architecture is the most common recurring need for SOA implementations.
Foresee linkages from IT to your business processes - implementation of an architecture that transitions IT into the role of a service provider for business functionality.
Create an organizational structure to support SOA including culture, skills, training, teaming, organization structure, decision making, reward systems, collaboration and governance.
Build a scalable infrastructure - create a baseline for your services performance and scalability using appropriate instruments and measurements.
Enable operational visibility - focus on governance and service management.
Thys Michels Blog 