✓Already running infrastructure on Azure and want unified billing/IAM
✓Need an EU Data Boundary guarantee for SMS data residency
✓Want SMS alongside voice, chat, email, and WhatsApp from one vendor
✓Enterprise buyer that values Microsoft's compliance posture (SOC 2, ISO 27001) over messaging-specific deliverability tooling
Feature by feature
Winner cells are tinted, green where AWS SNS leads, violet where Azure SMS does.
capability
AWS SNS
Azure SMS
Pricing
Price per SMS (US)
$0.00645
$0.0075
Pricing model
Usage-based (AWS)
Pay-as-you-go per message segment billed through the Azure subscription; no ACS-specific platform fee, but separate leasing and registration fees apply per number type
Volume discounts
No
No
Channels
SMS
Yes
Yes
MMS
No
Yes
WhatsApp
No
Yes
RCS
No
No
Voice
No
Yes
Routing & delivery
Carrier network
Multi-aggregator routing (AWS End User Messaging SMS)
Relies on underlying carrier partners rather than owning tier-1 infrastructure; publishes a per-carrier surcharge table (AT&T, T-Mobile, Verizon, US Cellular, etc.) for 10DLC traffic
AWS Support (docs/re:Post free; paid tiers add email/chat/phone)
Phone, email, and chat via paid Azure support plans (Standard, Professional Direct, Unified); free community Q&A and docs otherwise
24/7 support
Yes
Yes
Support SLA
Response-time SLAs by plan
SLA-backed response times tied to Azure support plan tier and case severity (for example, 1-hour response on the highest severity with Professional Direct)
FAQ
Common questions
AWS SNS starts at $0.00645 versus Azure SMS's $0.0075. Compare your expected monthly volume against the per-message rates above.