Ability to Backup all Projects

As we are developing our app we would love to be able to backup all the effort we have done to date. As can sometimes be the case for the SaaS community, if an organisation suddently just stopped, all the effort of the customers can be lost. Better safe than sorry in those scenarios. We have had a situation ourselves where this happened and if was a very important learning lesson. If we can get a facility to backup various aspects that would be great. For example PDFs of the designs and hierarchys. archives of images, spreadsheets of comments and notes etc All of this could be wrapped up in a project file and backed up to our own file storage or servers. Hope that makes sense. Thanks