We were promised personalised medicines, jet packs and flying cars by now.. why is integration still difficult?
In short, it's connecting two systems or data sets together. This could be as mundane as ensuring that an app has access to your employee lists all the way to merging companies and ensuring that information is shared effectively across all of their systems.
For app/websites/platforms we're typically connecting data to the platform via APIs or data access and/or connecting multiple systems so the approach is seamless.
For data / BI / Big Data projects are largely about ensuring that the right data, at the right granularity and the right time period are viewable and usable.