One-page printable guide: the three deployment models (cloud-only, cloud backup, hybrid edge+cloud) at a glance, the upload-bandwidth budget formula (cameras x bitrate = sustained upload), the three cloud cost meters (storage, egress, retrieval) with the deep-archive 12-48 h warning, the cloud-vs-on-prem crossover questions, the GDPR in-region/residency note, and a blank per-site sizing worksheet.
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