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Microsoft FAST vs Pulse Elasticsearch and OpenSearch comparison

 

Comparison Buyer's Guide

Executive Summary

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

Microsoft FAST
Ranking in Indexing and Search
8th
Average Rating
9.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Pulse Elasticsearch and Ope...
Ranking in Indexing and Search
15th
Average Rating
8.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Indexing and Search category, the mindshare of Microsoft FAST is 5.1%, down from 6.3% compared to the previous year. The mindshare of Pulse Elasticsearch and OpenSearch is 1.1%. It is calculated based on PeerSpot user engagement data.
Indexing and Search Mindshare Distribution
ProductMindshare (%)
Microsoft FAST5.1%
Pulse Elasticsearch and OpenSearch1.1%
Other93.8%
Indexing and Search
 

Featured Reviews

reviewer1466883 - PeerSpot reviewer
Technical Specialist at a tech services company with 5,001-10,000 employees
Robust solution with good value
Microsoft FAST is quite robust. Our clients are quite happy with it. For other users who already have a solution in place, we recommend Microsoft FAST because it is more compatible and you can organize the solution with Microsoft components. If you are with any other third party, there could be a chance that the required output is not what you would expect. But with Microsoft, it will work better. It is compatible with the older generation systems, so you can offer it. On a scale of one to ten, I would give Microsoft FAST an eight because I'm quite comfortable with it.
Rafayel Agamyan - PeerSpot reviewer
DevOps Engineer at a tech vendor with 1,001-5,000 employees
Search performance has transformed customer document access and continues to improve satisfaction
Customer satisfaction has significantly improved since switching to Pulse Elasticsearch and OpenSearch from old legacy services, as many insights from customers indicate that latency has changed dramatically and the speed is significantly better now. For others looking into using Pulse Elasticsearch and OpenSearch, it is definitely recommended to give it a try, especially if old legacy systems that are slow are currently being used. Lately, OpenSearch has come up with a new version that greatly enhances speed, so trying it is encouraged and it will be loved. A review rating of 9 reflects the overall satisfaction with Pulse Elasticsearch and OpenSearch.

Quotes from Members

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

Pros

"Microsoft FAST is quite robust. Our clients are quite happy with it."
"Microsoft FAST is quite robust, our clients are quite happy with it, and for other users who already have a solution in place, we recommend Microsoft FAST because it is more compatible and you can organize the solution with Microsoft components."
"Microsoft FAST is a really amazing search application."
"It is quite easy, and I think it was really great the way they offered the services."
"Customer satisfaction has significantly improved since switching to Pulse Elasticsearch and OpenSearch from old legacy services, as many insights from customers indicate that latency has changed dramatically and the speed is significantly better now."
 

Cons

"If there is any change in a system or a configuration or an update, we might face some issues."
"We do get support from Microsoft, but the response is quite slow."
"I think the way they support the ingesting service for Pulse Elasticsearch and OpenSearch is not really great."
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Top Industries

By visitors reading reviews
No data available
Construction Company
33%
Financial Services Firm
14%
Healthcare Company
11%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

Ask a question
Earn 20 points
What is your primary use case for Pulse Elasticsearch and OpenSearch?
My primary use case is powering up the search in the product.
What advice do you have for others considering Pulse Elasticsearch and OpenSearch?
I have not used the SQL query support feature. I did assess the RESTful API support. I have not utilized Pulse Elasticsearch and OpenSearch machine learning features, as there was no use case for m...
What needs improvement with Pulse Elasticsearch and OpenSearch?
I think the way they support the ingesting service for Pulse Elasticsearch and OpenSearch is not really great. If I got to attach a few more records, they don't support it. It's all rewrite every t...
 

Also Known As

MS FAST
No data available
 

Overview

 

Sample Customers

Moffitt Cancer Center, Hitachi Solutions, Manupatra Information Solutions, Unique World, _KODA AUTO a.s., MindTree Ltd, Mississippi Department of Transportation
Information Not Available
Find out what your peers are saying about Microsoft FAST vs. Pulse Elasticsearch and OpenSearch and other solutions. Updated: May 2026.
894,738 professionals have used our research since 2012.