I like that it has all my projects in one place, so when they are finished or have errors there's only 1 system to check instead of many different ones! It can be difficult for new users because some functions aren't intuitively obvious (or at least not as easy). The main problem we're trying to solve with JESC was having multiple systems for tracking our work - from billing clients through invoicing them via email/PDFs, then entering their information into Excel spreadsheets which were stored locally. We needed something where everything could easily go together without us needing to manually copy data between applications.