Best practice for images

Summary

Where should new images be stored to enable journeys to work efficiently

Content

We are starting to use journeys and see a number of use cases but some of the obvious bugs and design flaws need to be ironed out first. we have been unable to find any documentation that explains the best practice for replacing the seeded images or adding new images. Up to now we have had to try to find somewhere on a sharepoint site that we know all users will have permission to access and store images there. The solution is not a good one however as there is obviously latency caused by the fact that the image is