1. in 8.5 transformer options llike (do- while) available in looping structure but not available in 7.5 
2.in 7.5 can set the single parameter using environment variable but parameter set options are available in ds8.5 and patameter set means collection of variables 
3.in 7.5 quality stage has seperate designer .in 8.5 
quality stage is integrated in designer. 
4.in 7.5 we dont have range lookup. in8.5 we have 
range lookup. 
5. in 7.5 a single join stage can't support multiple 
references. in 8.5 a single join stage can support 
multiple references. 
6.in 7.5 , when a developer opens a particular job, and 
another developer wants to open the same job , that job 
can't be opend. in 8.5. it can be possible when a developer 
opens a particular job and another cdeveloper wants to open 
the same job then it can be opend as read only job.