Contentful vs Google Tag Manager

• Clean, modern interface (not clunky and outdated, like WordPress)
• High degree of flexibility (I can structure data any way my clients need)
• Enables headless frontend (i.e. I can build any frontend I want without having to change my CMS)

Read full review

• 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.

Read full review

• The new Contentful "branches" feature looked promising (it appears to mirror a git-like repository) but it requires the CLI, which isn't necessarily practical for teams that aren't current CLI users. It would be nice if the management of this feature were available via the UI (without that it causes more confusion than anything).
• The Contentful data modeling method makes for a bit of an awkward SDK developer experience in some strongly typed languages like Java. Most things that you might need can be accomplished, but it feels like the experience could be smoother.
• It would be nice if there were a way to migrate data between spaces (e.g. from your staging space to production).

Read full review

• 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.

Read full review

• Positive: faster changes and new associates can easily navigate without prior training/knowledge of CMS to make content updates
• Negative: Our website manager/provider can keep certain abilities (like changing specific images) so they can charge a fee for making the change

Read full review

• 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.

Read full review