How safe is cross domain access? -

How safe is cross domain access? -

i working on personal project , have beingness considering security of sensitive data. want utilize api accessing backend , want maintain backend in different server 1 user logon to. require cross domain accessing of data.

considering lot of accessing , transaction done, have next questions help guide me in right path have tried , tested cross domain access. don't want assume , implement , run troubles , redesign when have launched service thereby losing sleep. know there no right way many things in programming there many wrong ways.

how safe in handling sensitive info (even https). does have issues handling lot of users transactions. does have downside not mentioned.

these questions asked because post have read eve discouraged utilize of cross-domain access while encouraged it. decided hear professionals have used in bigger scale.

i building mobile app, using laravel backend.

thanks..

how safe in handling sensitive info (even https).

ssl considered safe (it's used everywhere , considered standard). however, it's not less safe hitting different server. info still has traverse pipes , reach destination has same risks regardless of server.

does have issues handling lot of users transactions.

i don't see why would. server server. ultimately, server's ability handle volume transactions going based on power, efficiency of code, , application's ability scale.

does have downside not mentioned.

authentication thing comes mind. i'm confused question how log 1 access info another. seems 1 application. if want revise question, i'll update answer.

cross-domain