A little bit about our experience organizing maintenance and support of legacy source code systems operated by the customer. Problems, tasks, approaches and solutions. Is it real to give a source code of your maintained system to be supported by the external company and not to get lots of new problems?

Legacy systems specifications

• Technology, specialists, environments.
• Knowledge and skills in the system. Operation and development
• Constraints and opportunities for maintenance and support

The main task of dealing with legacy systems

• Support
• Development
• Integration
• Migration

Approaches to solving problems

• Organizational
  • Competence Center
    • Organization
    • Team profile
    • Where can I get the experts?
    • Motivation issues
  • External Resources.
  • Interaction with the customer team.
• Stages of building a competence center.
  • Education (what, how and why).
  • Formation (environments deployment, the main tasks, how to determine that everything is ready)
  • Use competence center
• Technical
  • Development and test environments.
  • Source code managing.
  • «Knowledge management.”

Technical means of a “Knowledge management”

• Approaches to the problem of knowledge management.
• DCA architecture.
• Implemented features and examples of their use.
• DCA potential.

Conclusions.