How Google Trust Services and Sectigo differ on deployment, pricing, openness and what each is actually built for.
| Google Trust Services | Sectigo | |
|---|---|---|
| Type | Public CA (cloud) | Public CA + CLM |
| Deployment | SaaS (ACME) | SaaS |
| How it works | Google’s own publicly trusted CA, issuing DV certificates free through ACME and through Certificate Manager for Google Cloud load balancers. The certificates cost nothing; Certificate Manager itself is metered past the first 100 per month. Certificate Authority Service covers private CAs on the same platform. | Formerly Comodo CA. Issues public TLS, code-signing and S/MIME at volume through a large reseller channel. Sectigo Certificate Manager handles discovery, renewal and private PKI alongside the public roots. |
| Pricing* | Certificates free; manager metered | From $110/yr (1-yr DV) |
| Free tier | Yes | No |
| Open source | — | — |
| Compliance | WebTrust, CA/B Forum | WebTrust, CA/B Forum |
| Best for | Workloads already inside Google Cloud | Cost-sensitive estates that still want a CLM |
Choose Google Trust Services for workloads already inside google cloud. Choose Sectigo for cost-sensitive estates that still want a clm.
* Indicative list pricing (vendor documentation and public pricing pages, August 2026).