GCP Toronto vs Azure Canada Central vs AWS ca-central-1 (Montreal), best for my Magento?

Three options, picked on PIPEDA data-residency + latency basis. GCP northamerica-northeast2 (Toronto) has a Toronto-local datacenter, sub-5ms TTFB to Financial District, perfect for PIPEDA + Ontario data-residency. Self-hosted on GKE + Cloud SQL + Memorystore + Cloud Storage. Cost: C$700, C$2,000/month for typical M2 store. Azure Canada Central (Toronto) also has a Toronto-local datacenter, sub-5ms TTFB, strong for Microsoft-shop clients (Dynamics, Office 365, Power BI). Cost: C$800, C$2,200/month. AWS ca-central-1 (Montreal), physically in Quebec, ~25ms TTFB to Toronto, biggest ecosystem (Aurora, ElastiCache, OpenSearch). Cost: C$600, C$1,800/month. We usually recommend GCP Toronto or Azure Canada Central for stores with strict "data must stay in Ontario" mandates (BFSI, healthcare), and AWS ca-central-1 for tighter budgets, broader ecosystem needs, or French-Canadian preference. Adobe Commerce Cloud + Hyvä Cloud Canada also supported.