@Wayner as others have stated, you do have options for 90 or 180 day cloud archive options where the camera will dual-record to both the camera and the cloud, up to a max of 180 days in the cloud. There is not a 365-day cloud archive option, I think the licenses for all that back-end storage would become too expensive for there to be a high demand for 365-day archive. As much as we might not want to introduce an NVR into the architecture, you could potentially leverage RTSP to create your own NVR basically.
What is the use case for retaining video (either in the cloud archive or on board the camera) for up to 9 months? If leveraging cloud archive, and as long as you know you need to grab some video within the first 6 months, you can export whatever you need, you just need to determine that within the first 6 months for example if you have the 180-day MV_CA.