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How long will a legacy migration take?

How long will a legacy migration take? This is a common question and it is important to have a process to follow to answer this question with truth, transparency and a detailed amount of due diligence. Too many legacy migration projects have failed because they have not addressed this question sufficiently.

How long will a legacy migration take? This is a common question and it is important to have a process to follow to answer this question with truth, transparency and a detailed amount of due diligence. Too many legacy migration projects have failed because they have not addressed this question sufficiently. The input, process, and output to find out how long will a legacy migration will take, can be found below.

Input

  • UI of the legacy system (Sandbox Site)
  • Old documentation into the library (as much as possible)
  • Database schema from the Legacy database schema

Process

The roots causes of legacy systems come from the loss of knowledge and control. To start rebuilding the knowledge and regaining momentum, record all your meetings!

Output

  • Time Estimation Spreadsheet
  • Behaviour Identification Spreadsheet
  • Entity Requirements Spreadsheet
  • UX Flow
  • Plan with backlog
  • Entity diagram
  • UI diagram
  • Security diagram
  • Meeting Videos
  • Tech Spike (if required)