Microsoft Azure Communication Services Call Automation vs Plivo Voice API

Microsoft Azure Communication Services Call Automation8.9Visit Plivo Voice API7.1Visit

Higher score Microsoft Azure Communication Services Call Automation #6 in Voice APIs 8.9/10 Paid ✓ 4 of 5 features Visit Azure

vs

Plivo Voice API #25 in Voice APIs 7.1/10 Paid ✓ 5 of 5 features Visit Plivo

• Microsoft Azure Communication Services Call Automation fits best

  Azure teams automating calls with event workflows

• Plivo Voice API fits best

  Developers needing SIP and streaming voice

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Side by side

Feature	Microsoft Azure Communication Services Call Automation 8.9/10 Visit ↗	Plivo Voice API 7.1/10 Visit ↗
At a glance
Editor score	8.9	7.1
Ranking	#6 in Voice APIs	#25 in Voice APIs
Best for	Azure teams automating calls with event workflows	Developers needing SIP and streaming voice
Pricing model	Paid	Paid
Starting price	Not checked yet	$1,000/mo
Free plan	—	—
Free trial	—	—
Deployment	Cloud	Cloud
Integrations	1 integrations	2 integrations
Features Microsoft Azure Communication Services Call Automation 4/5 · Plivo Voice API 5/5
Inbound calling	✓	✓
Outbound calling	✓	✓
Phone number support	✓	✓
SIP support	Not checked yet	✓ (best)
Call recording	✓	✓
Specs
Concurrent call limit	Not checked yet	50 calls
SDK languages	C#, Java, JavaScript, Python	Python, Node.js, Ruby, PHP, Java, .NET, Go
Our review
Pros	Inbound and outbound calling with webhook-driven event control Speech, DTMF, streaming, transcription, recording, and transfers SIP Direct Routing connects existing telephony infrastructure	Supports inbound, outbound, PSTN and SIP calling Adds recording, conferences, webhooks and WebSocket streaming Offers SDK examples for Python, Node.js, Ruby, PHP, Java, .NET and Go
Cons	API-only delivery requires development work Outbound concurrency defaults to 2 calls per phone number PSTN pricing varies by destination and region	Pay-as-you-go includes 2 RPS and 50-call concurrency Enterprise starts at $1,000 per month Coverage differs between Pay as you go and Enterprise
Our verdict	Microsoft Azure Communication Services Call Automation is a server-side API and SDK offering for developers building programmable voice workflows over VoIP and the public switched telephone network. It supports inbound call answering,… Read the review →	Plivo Voice API lets developers programmatically make and receive telephone calls through HTTP APIs and Plivo XML. It is designed for businesses adding communications features to web and mobile applications, with inbound calling on Plivo… Read the review →

Strengths and trade-offs

• Microsoft Azure Communication Services Call Automation — where it wins

  • Inbound and outbound calling with webhook-driven event control
  • Speech, DTMF, streaming, transcription, recording, and transfers
  • SIP Direct Routing connects existing telephony infrastructure

  Where it doesn't

  • API-only delivery requires development work
  • Outbound concurrency defaults to 2 calls per phone number
  • PSTN pricing varies by destination and region

• Plivo Voice API — where it wins

  • Supports inbound, outbound, PSTN and SIP calling
  • Adds recording, conferences, webhooks and WebSocket streaming
  • Offers SDK examples for Python, Node.js, Ruby, PHP, Java, .NET and Go

  Where it doesn't

  • Pay-as-you-go includes 2 RPS and 50-call concurrency
  • Enterprise starts at $1,000 per month
  • Coverage differs between Pay as you go and Enterprise

• Microsoft Azure Communication Services Call Automation8.9/10 · Paid

  A capable Azure voice API for event-driven call automation with usage-based pricing.

  Visit AzureFull verdict →
• Plivo Voice API7.1/10 · Paid

  A developer-focused Voice API for inbound, outbound, SIP and streaming calls.

  Visit PlivoFull verdict →