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Alcatel-Lucent Rainbow vs Microsoft Unified Communications as a Service comparison

Alcatel-Lucent Enterprise and Microsoft are both solutions in the Unified Communications as a Service category. Alcatel-Lucent Enterprise is ranked #5, while Microsoft is ranked #4. Alcatel-Lucent Enterprise holds a 8.1% mindshare in UCS, compared to Microsoft’s 13.8% mindshare.
Alcatel-Lucent Rainbow
  • 280 Views
  • 154 Comparison Views
Microsoft Unified Communica...
  • 145 Views
  • 142 Comparison Views

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Alcatel-Lucent Rainbow
Ranking in Unified Communications as a Service
5th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
Unified Communications (12th)
Microsoft Unified Communica...
Ranking in Unified Communications as a Service
4th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of December 2025, in the Unified Communications as a Service category, the mindshare of Alcatel-Lucent Rainbow is 8.1%, down from 9.0% compared to the previous year. The mindshare of Microsoft Unified Communications as a Service is 13.8%, up from 5.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Communications as a Service Market Share Distribution
ProductMarket Share (%)
Microsoft Unified Communications as a Service13.8%
Alcatel-Lucent Rainbow8.1%
Other78.1%
Unified Communications as a Service
 

Comparisons

Kamailio SIP Server vs Alcatel-Lucent Rainbow Logo
Kamailio SIP Server vs Alcatel-Lucent Rainbow
Compared 70% of the time
Alcatel-Lucent OpenTouch Enterprise Cloud vs Alcatel-Lucent Rainbow Logo
Alcatel-Lucent OpenTouch Enterprise Cloud vs Alcatel-Lucent Rainbow
Compared 30% of the time
More Alcatel-Lucent Rainbow Competitors
Voice Services and Solutions vs Microsoft Unified Communications as a Service Logo
Voice Services and Solutions vs Microsoft Unified Communications as a Service
Compared 100% of the time
More Microsoft Unified Communications as a Service Competitors
 

Product Reports

Buyer's Guide
Unified Communications
December 2025
Alcatel-Lucent Rainbow reportDownload Alcatel-Lucent Rainbow product report
No data available
 

Also Known As

Alcatel Lucent Rainbow, Alcatel-Lucent OpenTouch Conversation
MS Unified Communications as a Service
 

Overview

The Rainbow app is a cloud-based UC service (UCaaS) that makes additional collaboration services available to users, regardless of their existing communications systems. ... Rainbow takes a hybrid cloud approach, integrating with Alcatel-Lucent OXO Connect and OmniPCX Enterprise, as well as non-ALE PBXs.

Alcatel-Lucent Enterprise
Microsoft unified communications technologies offer customers choices in how their communications and collaboration software is delivered, managed, and maintained: On-premise, Hosted by partners and Hosted by Microsoft. By uniting your existing communication systems and tools: Desktop telephone systems, Legacy PBX and IP-PBX systems, Internet, Voice mail and Faxes.
Microsoft
 

Sample Customers

Blickle and Scherer, Loughborough University, CSF Inox, Caritas Speyer
Swisscom
See our list of best Unified Communications as a Service vendors.

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