What is a phased data migration?

Put simply, data migration is the process of moving your data from source systems to a target location. Sounds easy right? Afterall we are all used to moving files and data around in our daily lives. In practice, data migrations are far more complex than that.

Independent research from companies such as Bloor Group and Gartner confirms this:

“83% of data migration projects either fail or exceed their budgets and schedules.” – Gartner https://group47.com/83_Percent_Of_Data_Migrations_Fail.pdf?utm_source=xp&utm_medium=blog&utm_campaign=content

“More than 80% of data migration projects run over time and/or over budget. Cost overruns average 30%. Time overruns average 41%.” – Bloor Group https://www.bloorresearch.com/research/data-migration/?utm_source=xp&utm_medium=blog&utm_campaign=content

So, what makes data migrations so challenging?