I can maybe start and then invite my colleague to add some detail.
It was also the monthly changes that were made to the application, both in terms of improvements and responding to the changing health measures. Sometimes those were significant: plugging into provincial and territorial proof of vaccination systems, providing COVID test results, and also facilitation techniques, having people being able to save their profiles. That was very helpful for truckers going back and forth across the border and to our nurses in Windsor, to not have to put their profile in every time they crossed. So there were two aspects, two changes, that took place virtually on a monthly basis.
When we talk about the app, the cost of making those changes as well as the security and the accessibility, as you mentioned, plugging into CBSA's systems and the cloud maintenance, I can invite my colleague Kelly to give some details on that. I just wanted to paint the picture of what the app looked like over the two and a half years in which it was being used.