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lpcruz2
lpcruz2
August 29, 2017
Solved

DTM and GTM in the same site

  • August 29, 2017
  • 8 replies
  • 7929 views

Is there any problem with installing the GTM and DTM in the same site? I searched and read about being careful with Data Layer, but I'd like to know if there's any conflict between the tools 

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    Best answer by jantzen_b

    It's typically not a good idea in general to have two tag managers deployed on the same site. Can I ask why you're trying to install both on the same site? If you are just testing both tag managers, could you use them on different sites or different sections of the same site?

    8 replies

    jantzen_b
    Adobe Employee
    jantzen_bAdobe EmployeeAccepted solution
    Adobe Employee
    August 29, 2017

    It's typically not a good idea in general to have two tag managers deployed on the same site. Can I ask why you're trying to install both on the same site? If you are just testing both tag managers, could you use them on different sites or different sections of the same site?

      Rudi-Shumpert
      Adobe Employee
      Rudi-ShumpertAdobe Employee
      Adobe Employee
      August 29, 2017

      I second the notion that having more than 1 TMS on a site is not generally a good idea.  However if you are forced down this path there are a few things to make sure you are doing / not doing.

      1) NEVER EVER EVER use one TMS to deploy another TMS.  It's bad mojo.

      2) The success rate of having code in one TMS try to grab variables that are being set/used in the other TMS will be quite low and it most likely not something any TMS vendor will support.

      There might be other items but these are the 2 that stand out the most to me.

        lpcruz2
        lpcruz2Author
        August 29, 2017

        Hi Jantzen,

        My question is just to confirm something. I don't intend to add two TMS in the same site but I need to see other opinions about this topic. DTM is not very popular in Brazil, so I thought I'd better ask.

        jantzen_b
        Adobe Employee
        jantzen_bAdobe Employee
        Adobe Employee
        August 29, 2017

        Understood. Did you have other questions about DTM that we could help with? If not, could you mark one of the replies as the correct answer?

        O
        olenan46316709
        Level 2
        March 13, 2018

        Hello! I have a similar question, and would like to fully understand key disadvantages of having both GTM and DTM on the same site. Site speed? Inconsistency in data? Any other reasons not to have both running at the same time? Would appreciate any references to official sources where this can be outlined. Thank you in advance! 

        jantzen_b
        Adobe Employee
        jantzen_bAdobe Employee
        Adobe Employee
        March 15, 2018

        Rudi pointed out a few of them above:

        • Deploying one tag manager using another won't ever be supported and can lead to unreliable deployments
        • Success rates of having one tag manager interact with another will be unreliable at best
        • The more you have running/loading on your page, the slower it will load. If you're loading two tag managers, you're doing everything twice.
        • Data will likely not match since different tools and tag management systems will have different methods of collecting and sending data
        • ect...

        Is there a specific reason you want to deploy both on the same site? DTM is able to deploy any pixel/code you'd like. Almost all limitations of DTM are being addressed with Adobe's newest tag management offering Launch, by Adobe

        O
        olenan46316709
        Level 2
        March 15, 2018

        Thank you Jantzen. Agreed with everything mentioned here. The main reason for deploying both is related to media tracking and Google Adwords integration. The client wants to continue using AdWords, and I've heard Adobe's integration with it isn't perfect...

        jantzen_b
        Adobe Employee
        jantzen_bAdobe Employee
        Adobe Employee
        March 16, 2018

        Sounds like a great opportunity for someone to write a "perfect" extension in launch for the integration.

        Launch is being built as an open platform where customers and third-party consultants will be able to build their own extension. This will allow for our experts within the community to build integrations with just about any pixel/tag out there. We will no longer be limited by having a single team being responsible for every integration and extension.

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