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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Google Tag Manager

    Score9.5 out of 10
    N/AFrom Google, the Google Tag Manager is a tag management application that facilitates creating, embedding, and updating tags across websites and mobile apps. It is a free option, vs. the company's enterprise-tier Google Tag Manager 360.

    $0

    Sizmek Ad Suite (discontinued)

    Score10 out of 10
    N/ASizmek Ad Suite, from Amazon Advertising since being acquired, was a multichannel ad server used to create, distribute, customize, measure, and optimize campaigns. It was rebranded to Amazon Ad Server, but later discontinued in 2024.N/A
    Pricing
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Editions & Modules
    No answers on this topic
    No answers on this topic
    Offerings
    Pricing Offerings
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Free Trial
    NoNo
    Free/Freemium Version
    YesNo
    Premium Consulting/Integration Services
    NoNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details——
    More Pricing Information
    Community Pulse
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Considered Both Products
    Google
    No answer on this topic
    Discontinued Products
    No answer on this topic
    Key User Insights
    Would buy again
    93%
    Would buy again
    14 Answers
    No answers on this topic
    Delivers good value for the price
    100%
    Delivers good value for the price
    14 Answers
    No answers on this topic
    Happy with the feature set
    100%
    Happy with the feature set
    15 Answers
    No answers on this topic
    Lived up to sales and marketing promises
    100%
    Lived up to sales and marketing promises
    11 Answers
    No answers on this topic
    Implementation went as expected
    93%
    Implementation went as expected
    13 Answers
    No answers on this topic
    Features
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Security
    Comparison of Security features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    8.9
    58 Ratings
    5% above category average
    Sizmek Ad Suite (discontinued)
    -
    Ratings
    Role-based user permissions8.958 Ratings00 Ratings
    Tag Management
    Comparison of Tag Management features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    8.8
    68 Ratings
    8% above category average
    Sizmek Ad Suite (discontinued)
    -
    Ratings
    Tag library9.263 Ratings00 Ratings
    Tag variable mapping8.955 Ratings00 Ratings
    Ease of writing custom tags7.367 Ratings00 Ratings
    Rules-driven tag execution8.162 Ratings00 Ratings
    Tag performance monitoring10.056 Ratings00 Ratings
    Page load times8.849 Ratings00 Ratings
    Mobile app tagging9.334 Ratings00 Ratings
    Library of JavaScript extensions8.838 Ratings00 Ratings
    Data Management & Integrity
    Comparison of Data Management & Integrity features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    7.6
    69 Ratings
    7% below category average
    Sizmek Ad Suite (discontinued)
    -
    Ratings
    Event tracking8.666 Ratings00 Ratings
    Mobile event tracking9.447 Ratings00 Ratings
    Data distribution management8.841 Ratings00 Ratings
    Universal data layer8.358 Ratings00 Ratings
    Automated error checking3.045 Ratings00 Ratings
    Ad Network Integration
    Comparison of Ad Network Integration features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    -
    Ratings
    Sizmek Ad Suite (discontinued)
    4.4
    5 Ratings
    50% below category average
    Data Transfer00 Ratings7.74 Ratings
    DSP integration00 Ratings1.05 Ratings
    Ad Campaigns
    Comparison of Ad Campaigns features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    -
    Ratings
    Sizmek Ad Suite (discontinued)
    7.0
    9 Ratings
    11% below category average
    Ad campaign creation00 Ratings8.09 Ratings
    Ad deployment00 Ratings7.09 Ratings
    Display advertising00 Ratings8.09 Ratings
    Ad display and retargeting segmentation00 Ratings6.54 Ratings
    Sequence targeting00 Ratings5.73 Ratings
    Ad Reporting & Analytics
    Comparison of Ad Reporting & Analytics features of Google Tag Manager and Sizmek Ad Suite (discontinued)
    Feature
    Google Tag Manager
    -
    Ratings
    Sizmek Ad Suite (discontinued)
    7.8
    9 Ratings
    1% above category average
    Ad dashboards00 Ratings6.09 Ratings
    Ad performance reports00 Ratings7.09 Ratings
    Ad conversion tracking00 Ratings8.09 Ratings
    Ad attribution reporting00 Ratings9.09 Ratings
    Cross-channel ad management00 Ratings8.98 Ratings
    Ad forecasting and optimization00 Ratings8.06 Ratings
    Best Alternatives
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Small Businesses
    Adobe Experience Platform Launch
    Score8.4 out of 10
    AdRoll
    Score3.7 out of 10
    Medium-sized Companies
    Adobe Experience Platform Launch
    Score8.4 out of 10
    Criteo Commerce Growth
    Score8 out of 10
    Enterprises
    Adobe Dynamic Tag Management (discontinued)
    Score10 out of 10
    Criteo Commerce Growth
    Score8 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Likelihood to Recommend
    9.7
    (73 ratings)
    8.0
    (9 ratings)
    Likelihood to Renew
    7.0
    (7 ratings)
    -
    (0 ratings)
    Usability
    7.1
    (18 ratings)
    -
    (0 ratings)
    Availability
    9.1
    (1 ratings)
    -
    (0 ratings)
    Support Rating
    2.0
    (12 ratings)
    -
    (0 ratings)
    Online Training
    7.3
    (1 ratings)
    -
    (0 ratings)
    Implementation Rating
    9.8
    (2 ratings)
    -
    (0 ratings)
    User Testimonials
    Google Tag ManagerSizmek Ad Suite (discontinued)
    Likelihood to Recommend
    Google
    I have found Google Tag Manager as the go to solution for managing all of your event and conversion tags for your website. Not only does it make it easy to manage all of your tags in the one place, it is fairly intuitive to use and there is plenty of videos and help documentation online to help set up what ever you need. No scenarios come to mind at the moment on where it is less appropriate to use.
    Incentivized
    Read full review
    Discontinued Products
    I've use Sizmek as media analytics and reporting tool. Unless a site doesn't work properly with Google DoubleClick, I rarely recommend Sizmek over DoubleClick. It can do everything DoubleClick does, but with almost twice the hassle. One Area that makes it easier to track is that ads are given individual tracking ID's that creative can look up and search by when indexing and testing to make sure all ads are working and input.
    Incentivized
    Read full review
    Pros
    Google
    • Selecting elements on a site [object, class, cookie, etc] (to later fire an event, send some data, etc) is very easy with triggers. Want to add an event when someone clicks on a button? Super easy. It was many many DOM selectors and you can even add custom functions if you need to do something more specific
    • In general, firing events in different circumstances is very easy mixing triggers and tags. You can track almost any element of the DOM and do whatever you want with it.
    • Testing is a great functionality. Only you can see what's on the site and you can debug it easily by seeing which events or tags were triggered and all the DOM elements involved (and why they matched the trigger).
    • Working in environments (staging, production) and versioning is easy to do, deploying changes in 2 clicks.
    Incentivized
    Read full review
    Discontinued Products
    • Easy Dashboard Navigation - Search bar allows user to quickly locate details about any campaign
    • Insightful Analytics Tools - Platform provides users customizable graphs to leverage for reporting presentations
    • Extensive Reporting Metrics - Ability to pull ad performance reports on all aspects of campaign
    • Simple Creative Hosting - Easy upload and path location details for creative files
    Incentivized
    Read full review
    Cons
    Google
    • There are several good integrations, but there can always be more. Native tracking for call tracking solutions, analytics providers, non-Google advertisers would be top of my list.
    • Documentation is just dreadful. Luckily there are some awesome folks out there doing crowdsourced tutorials (shout out to Simo Ahava) but by and large the Google Tag Manager instructions are worth what you pay for them.
    Incentivized
    Read full review
    Discontinued Products
    • Sizmek's trading desk was a total miss when I tested it a few years ago.
    • I briefly used Abakus and did not find it intuitive, accurate or helpful. It has a long way to go before it can compete with the likes of VisualIQ.
    Incentivized
    Read full review
    Likelihood to Renew
    Google
    I haven't found another option for us to use especially one that is free. Down the road we may go a different route but for now GTM is a good option and does what we need it to do. It'd be nice to get more support or more integrations but with the free version there's only so much one can expect to get I suppose.
    Incentivized
    Read full review
    Discontinued Products
    No answers on this topic
    Usability
    Google
    No difficult obstacle to overcome but Google Tag Manager can still be difficult for many users to deploy. Sure the basic HTML script can be deployed quite easily, but when you start to require triggers, variables, etc, it can be a little daunting.
    Incentivized
    Read full review
    Discontinued Products
    No answers on this topic
    Support Rating
    Google
    GTM does not provide support. This is one of GTM's biggest issues but it's due to the level of customization for each website. If your team thinks they would heavily rely on the need for a support staff it is probably better to invest in a paid service with a team that can support your needs.
    Incentivized
    Read full review
    Discontinued Products
    No answers on this topic
    Online Training
    Google
    I thought there was a little bit too much emphasis on AdWords stuff, not enough on the generic application of GTM.
    Read full review
    Discontinued Products
    No answers on this topic
    Implementation Rating
    Google
    Planning and communication will help greatly with an in-house implementation. If there are large teams, try to limit the number of people involved to 1-2 developers (back-end dev may be necessary depending on your platform), one analytics marketer and one project manager.
    Incentivized
    Read full review
    Discontinued Products
    No answers on this topic
    Alternatives Considered
    Google
    We moved to GTM from a standard Google Analytics implementation. GTM is much more flexible and easier to make changes, especially as the changes relate to multiple sites and environments. While there is a learning curve when figuring out how to use GTM, I believe the change has been worth it because it helps us understand at a more fundamental level how our tracking works and gives us a lot more control over what we track and how.
    Incentivized
    Read full review
    Discontinued Products
    For me the main point here is the support, all the adservers offer more or less the same functionality and capabilities. The real advantage you will gain using Sizmek will be their customer support team and their open approach with other vendors.
    Read full review
    Return on Investment
    Google
    • GTM is very useful to determine if a particular element on the site is useful (i.e. is it being watched, is it being clicked, does it help customers navigate through more pages). As an SEO person, I can use this information to decide what to optimize for but also to track progress and see improvements in engagement.
    • With the use of Google Tag Manager, I was able to easily inject an A/B testing tool which lead to several improvements in lead generation.
    Incentivized
    Read full review
    Discontinued Products
    • Sizmek has had a positive impact on ROI because it delivers the reports our clients want and need
    • Sizmek has had a postive impact on employee morale due to ease of use
    Incentivized
    Read full review
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