own date but as even says if you clearly can't do that every time so the those patterns were you connect to legacy systems but connect as little layers as possible ok so we have our last question coming from Portugal hello from Portugal great talk how do you deal with scalability of software from vendors or do you avoid using software that are behind licensing okay he was vendor software definitely and we use some license after all so you know Intel code there is really a lot of domains and for some you have a