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Microsoft Purview eDiscovery vs kCura Relativity comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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

kCura Relativity
Ranking in eDiscovery
5th
Average Rating
8.0
Reviews Sentiment
8.1
Number of Reviews
7
Ranking in other categories
No ranking in other categories
Microsoft Purview eDiscovery
Ranking in eDiscovery
1st
Average Rating
7.6
Reviews Sentiment
7.5
Number of Reviews
8
Ranking in other categories
Microsoft Security Suite (22nd)
 

Mindshare comparison

As of June 2026, in the eDiscovery category, the mindshare of kCura Relativity is 5.6%, up from 4.9% compared to the previous year. The mindshare of Microsoft Purview eDiscovery is 5.1%, down from 26.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
eDiscovery Mindshare Distribution
ProductMindshare (%)
Microsoft Purview eDiscovery5.1%
kCura Relativity5.6%
Other89.3%
eDiscovery
 

Featured Reviews

HR
Legal Associate at Elevate
Easy to categorize documents and offers transparent view of documents
I found Relativity very useful because it's easy to categorize documents. If you get more complex litigation, like around 500,000 or 1,000,000 documents, it's easier to categorize them in Relativity. So, it's a more powerful tool for reviewing documents. I haven't faced any problems using Relativity yet. I found it very useful.
Frank Radeck - PeerSpot reviewer
Director, IT Infrastructure & Cloud Technology at a legal firm with 501-1,000 employees
Tasks that took an entire day before we implemented the solution now take just 30 minutes.
The most valuable feature of Microsoft Purview eDiscovery is its ability to search across various platforms, including Exchange, SharePoint, Teams, and OneDrive. It enables a streamlined, unified process for searching across these platforms. It is critical for Purview to be able to connect to iOS, Mac, and Android devices and data in other SaaS apps. From a support perspective, I can do things while I'm eating lunch or something else. It's more dynamic and responsive. I think everybody appreciates it. We're not tied to one device. Purview's multi-cloud capabilities are also essential for the same reasons. Keeping everything under one umbrella further increases the time savings. Purview accounts for critical regulations from around the world. This is crucial because we hold ourselves accountable to standards and need to align with them. Working at a law firm, we have clients who dictate to us what standards they expect. The visibility is excellent. As we move more things into the cloud, more opportunities exist to put everything under one umbrella.

Quotes from Members

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

Pros

"The searching capability of the product is definitely very valuable to our organization."
"The ease of navigation from dock to dock, and that kind of usability, is quite helpful."
"I like Relativity's blackout feature, as well as the Case Dynamics function."
"Unquestionably, kCura Relativity is a scalable solution."
"Caplets are a very good technical feature."
"The solution has great searching capabilities, and it's very reliable."
"There are a lot of ways to QC your work and save your searches, and we had really good case support from the Relativity team."
"The most valuable feature from my perspective are the Kepler; it's a component that is more technical and directly related to the development companies that will be using it, allowing you to create custom APIs and gather most of the information that is not available in the standard API that they offer."
"Microsoft Purview eDiscovery has saved me personally a lot of time because I can query it, and it touches everything we have as a full Microsoft shop."
"Tasks that took an entire day before we implemented Purview now take just 30 minutes."
"Purview eDiscovery has made it significantly easier to handle rare litigation requests."
"The return on investment is saving the equivalent of one or two full-time IT department employees and a few hours per week for legal staff."
"I think eDiscovery Premium has made dealing with data from Teams much more accessible than any other platform."
"The most valuable feature of Microsoft Purview eDiscovery is its ability to search across various platforms, including Exchange, SharePoint, Teams, and OneDrive. It enables a streamlined, unified process for searching across these platforms."
"The speed of it is valuable. I am able to search even 10,000 mailboxes for specific content. It helps search and accommodate the often limited information provided by users regarding what they need."
"The machine learning wasn't half bad. I really like that part. I thought it was novel. It pretty much automated it, once you trained the model."
 

Cons

"There are a lot of bugs on the development side."
"I would definitely not recommended it unless you have someone who has had experience with it and knows how to work the program."
"They require more built-in support for some third-party applications."
"I think RelativityOne, because it is so powerful, can be very difficult to use and there's a lot that can go wrong if you don't know how to use it."
"What I dislike about Relativity is that we have to go through the host in order to do productions and loads. It is not a do-it-yourself tool."
"You are charged per user. It can get pretty expensive if you have a lot of users in your organization."
"I haven't seen anything on AI merging with Relativity."
"The platform's integration of advanced AI features could further enhance its capabilities."
"I see two significant challenges with many of my clients. One is that there are some functionality gaps compared to specialized tools in the legal industry, like a legal hold tool or a document review tool. They have features that Purview eDiscovery lacks. Those gaps create a situation where I almost have to do things twice. I need to collect all my data in eDiscovery and ship it to another platform to complete the review."
"I would suggest adding more platforms."
"We find that many critical functions are available only to E5 license holders."
"We find that many critical functions are available only to E5 license holders. It would be beneficial to have more options available for E3 customers. Enhanced Teams functionalities and better capture of text message data, both SMS and MMS, would also be improvements."
"It has been one of the most solid tools I have worked with. However, Purview Data Loss Protection for remediating policy violations needs refinement, for example, in defining what constitutes a credit card because that is where I get the most false positives."
"The query language can be time-consuming to figure out if you don't know it initially."
"Microsoft Purview eDiscovery should be cheaper."
"Purview eDiscovery works, but it's not entirely perfect. There were times when search results would get hung up or error codes would be presented and we'd have to contact Microsoft to get that sorted out."
 

Pricing and Cost Advice

"The pricing is extremely complicated."
"It's worth the money."
"They are maintaining the per gigabyte pricing, and it's based on tiers of how much data you host with them."
"Users are typically charged a fee per user account and a separate fee based on the amount of data processed and hosted."
"The pricing and licensing with Microsoft can be complex, and licensing is known to be a challenge because it changes frequently. While the licensing for Purview is not as tricky as other Microsoft products, navigating licenses since the shift to E3 and E5 plans has been a task, as individual licenses must now be purchased separately."
"The costs associated with E5 licensing are currently expensive for us, so we use the E3 license, which comes with fewer features and functionalities."
"With the full bundle, pricing is not a significant concern. As an M3, I find the Purview pricing of 1250 per user worthwhile."
"In the positions that I've had through contracting over the years, I've heard talk of it being overpriced and underperforming compared to its competitors."
"Microsoft Purview eDiscovery comes as part of Microsoft 365 licenses."
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Top Industries

By visitors reading reviews
Legal Firm
13%
Manufacturing Company
12%
Financial Services Firm
11%
Construction Company
10%
Government
13%
Financial Services Firm
12%
Manufacturing Company
7%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business1
Midsize Enterprise4
Large Enterprise2
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise2
Large Enterprise3
 

Questions from the Community

What is your experience regarding pricing and costs for kCura Relativity?
It's expensive for an individual, but for a company, it's not expensive. And for an individual, I believe it's of no use.
What needs improvement with kCura Relativity?
I haven't seen anything on AI merging with Relativity.
What is your primary use case for kCura Relativity?
We use Relativity to code documents for their responsiveness, privilege, private information, confidentiality, and so on. We use it to categorize our documents into different categories depending o...
What is your experience regarding pricing and costs for Microsoft Purview eDiscovery?
The setup process was very straightforward. We acquired pricing through our reseller in NASDAQ, eliminating the need to search for prices ourselves.
What needs improvement with Microsoft Purview eDiscovery?
The query language can be time-consuming to figure out if you don't know it initially. While there are options with dropdowns to select criteria, having a natural language feature would be benefici...
What is your primary use case for Microsoft Purview eDiscovery?
I sometimes use it for legal holds or to find lost items, and to determine what is going on. However, most of the time, my use case is legal-related.
 

Also Known As

Relativity
No data available
 

Overview

 

Sample Customers

Webb & Tyler
Information Not Available
Find out what your peers are saying about Microsoft Purview eDiscovery vs. kCura Relativity and other solutions. Updated: June 2026.
900,228 professionals have used our research since 2012.