When building a new data technology stack for our B2C business, some of our goals included eliminating data silos, reclaiming control and ownership of our data from our ad vendors, learning as much as possible about our customers without being creepy, and being able to craft the best personalized experiences for customers we could.
To accomplish these goals, it seemed a no-brainer that we'd want a platform which collected event-level data from our website and then did cool stuff with it, such as sending it (reliably) to vendors, or aggregating it into visitor profiles so that we could learn about our visitors and take actions on them. We try to hold ourselves to a very high standard in how we treat customers, so we weren't looking for simplistic actions such as, "Show a retargeting ad to everyone!" Instead, we were hoping to apply much more sophisticated rules for real-time decision-making on how to best message and treat our visitors.
I learned there was an entire category of "Customer Data Platforms" and figured it'd be easy to choose one. Nope. We vetted many and were disappointed by nearly all of them, since it turns out most of these platforms are simply email marketing tools or ad vendors who have taken to labeling themselves as "CDPs" in order to ride the latest trend. None of these tools could actually accomplish our goals, and many of them actually seemed to make our data silo problem worse.
Tealium was the exception, and seemed to solve our problems, so we started a year ago. It's been a great experience. We consider them the conductor of our martech orchestra, so to speak. We've achieved our goals via the platform, even though we've still only scratched the surface in some areas. I've also been really impressed with their team--smart, straightforward people. Some of our other vendors may have a cool interface but leave you feeling poorly supported. This has never been the case with Tealium.
Long story short, I recommend them more highly than I'd recommend most any other tool we use.
As mentioned above, I view Tealium as having massive potential, so any shortcomings we've had with it have more been a function of our own limited time and resources (we can't immediately implement all the cool features on offer). Good problem to have, I guess.
We once had a certain day's data partially impacted by some system testing on their end, which made it tough to use the data from that particular day. Generally, though, I've never seen Tealium go down or have data unavailable, and their system is solid.
Addressed above. Achieving single source of truth about our website event data, eliminating data silos, implementing all tags and scripts from third-party tools and vendors, aggregated data into visitor profiles, taking cool sophisticated actions on visitors.