It's hard to get analysis right. Even when you do, it's hard to get it consistently right. Good process is very much about protecting ourselves from the things that cause mistakes so that we have a chance to be consistently correct. In two previous posts, I’ve listed eight different common sources of error in web analytics:
1. Self-Interested Measurement: Finding what you expect in the data
2. Lack of Statistical Significance: Believing small variations or tiny samples to have much more significance than they really do.
3. Unreliable data and what to do about it: Trending bad data or “getting over” critical data quality issues
4. Siloed Optimization: Improving one channel at the expense of others
5. Metric Monomania: Over-reacting to changes in individual KPIs
6. Tactical Focus: Concentrating on micro-analysis and missing the important information.
7. Self-Selection: Reversing cause-and-effect and thinking related items are necessarily causal.
8. Navigation Structural Influences: Reversing cause-and-effect and evaluating content performance without factoring in the influence of site structure.
In my last post, I covered the first three topics, today I’ll pick up from there.
Siloed Optimization
In discussing the many problems created by self-interested measurement, I suggested that letting vendors measure their own performance was nearly always a bad idea. It turns out to be bad not simply because of self-interested measurement, but because vendors are usually focused on just one small piece of your business – your SEO or your PPC campaign or your Display Advertising.
Measuring success when focused on a single area can often cause significant problems in optimization. The thinking often goes like this: “I’ll optimize my PPC program to get traffic to the web site. Then I’ll optimize my landing pages to get the best click-thru. Then I’ll optimize by order processes to get the best conversion rate.” But treating each of these steps as if they existed in isolation is a fundamental mistake. Nor is this problem unique to vendors. Even where companies are doing all of these steps internally, the likelihood of siloed optimization is very high.
The reason it’s a bad idea isn’t hard to understand. If you optimize your PPC program to drive traffic, you aren’t measuring the quality of traffic you are getting (it’s the landing page and web sites job to convert). When you optimize to traffic, you’ll almost invariably optimize to bad traffic. So your landing pages and web site are getting much worse traffic from your PPC program than they should.
The same process repeats itself with Landing Page optimization. If you tune the landing pages for click-through, you’ll probably find ways to get the most and not necessarily the best visitors to click. That makes the rest of the web site perform worse.
With siloed optimization, you can optimize the heck out of every step in the process and still have amazingly bad results. Indeed, it’s the optimization that’s creating the bad results.
All this is pretty bad, but the drawbacks to siloed optimization don’t end there. It today’s world, most marketing channels interact – for example, PPC and SEO simply cannot be treated as independent. If you treat them as independent channels, your budget allocations in each area will miss potential opportunities to arbitrage one channel over another. We’ve seen plenty of PPC programs than simply cannibalize other channels. It looks like the PPC program is performing well until you realize that most of what it’s doing is simply borrowing visitors from other – potentially less expensive – channels.
So what’s the cure for siloed optimization? First, never use proxies for success that don’t really translate into your real business goals. In SEO, measuring how many words you have in the top 10 is NOT a good proxy for success. It says nothing at all about how much quality traffic your SEO effort is actually driving.
For any marketing channel, you can avoid siloed optimization by focusing on the overall business success of that channel when all the other factors are held constant (like landing page and web site). You should also think about attribution carefully and make sure you use an attribution model that is at least reasonable in terms of crediting channels for success.
In general, getting out of siloed optimization means rejecting any point measurement solutions (like Spotlight tagging or Top Word Counting) and using your web analytics solution or back-office tracking as the ultimate arbiters of success across all channels. It also means that your success measurement across all channels should be centralized in a single place – not distributed out to each organization and certainly not entrusted to self-interested vendors.
You should also be sure that every marketing channel is measured in identical terms and against the same overall measures of success that have been agreed upon throughout the organization. This is best achieved via a formal effort as part of your online measurement to develop and standardize a set of value measurements for everything you want your online properties to achieve (branding, corporate communications, lead generation, ecommerce, customer support, etc.). This standardization of value and attribution should almost always be one of the first things you do when setting up online measurement.
Metric Monomania
It is our business, as analysts, to reduce complexity down to some level of simplicity and to distill valuable information from enormous quantities of data. But in our quest to achieve that distillation, there is always the possibility of over-reaching – of reducing a problem to such simple terms that the information we provide is no longer capable of correct interpretation. In the world of web analytics, Key Performance Indicators (KPIs) have been one of the main tools for distilling valuable information from data. And they've also been consistently one of the most abused techniques - resulting in a mono-maniacal focus on the actionability of single numbers. As I’ve argued extensively and I think conclusively, single metrics almost never have that inherent actionability. When we pretend that we do, we encourage misinformed and nearly always misguided decision making.
What is the solution? Instead of trying to capture complex systems in a single metric, analysts should focus on building reports that help decision-makers understand the important factors driving system performance AND their relationship to each other.
From a process perspective, this changes many of the most common tasks in web analytics. In building implementations, the focus is no longer on finding KPIs and then ensuring that they are supported by the implementation for reporting (a disastrous strategy in general and one guaranteed to produce a poor implementation). Instead, the focus is placed on understanding what key systems need to be described and ensuring that all the metrics important to understanding that system are captured.
In reporting, this means that the onus of requirements gathering is removed from stakeholders. No process is less productive than the misguided solicitation of “reporting requirements” from stakeholders. Based on a ruinous and deeply flawed analogy with traditional BI systems, web analysts have adopted the idea that stakeholders are supposed to be able to tell them what they want in reports. These requirements are then baked into the implementation and used to produce reports.
It’s all wrong. Individual metrics (no matter how “Key”) aren’t all that is significant. Stakeholders don’t and shouldn’t be expected to understand whole systems – that’s the analyst job. So instead of trying to drive reporting requirements by stakeholder knowledge of KPIs, web analysts should drive reporting requirements by understanding what systems decision-makers need to understand.
This is a fundamental change in the organizational flow of requirements to web analytics practitioners and it considerably raises the stakes on what’s required of those practitioners. It means that the subject-matter experts driving reporting requirements for web analytics are analysts – not stakeholders.This has deep implications for the type of resource necessary to generate web analytic reports; instead of a report geek, you should be using real business analysts for this work.
In practice, I also think that this means organizations should concentrate on Analytic reporting. Throwing out all those pimped up dashboards and pretty tabular reports may be a hard thing to do. But instead of facilitating good thinking about web analytics and decision-making, they are more often a fundamental part of the problem – encouraging error instead of protecting against it.
Finally, and as a corollary to this, organizations should think very carefully about who they provide access to the analysis tool. The tools available today are very metric focused. They demand careful analysis and considerable knowledge if you are trying to understand and properly evaluate any real-world system (be it traffic, conversion, engagement, etc.).
Because of this, I believe that access to the tools should be restricted primarily to analysts and true power-users. What’s more, power-users should only be given access after you’ve created a reporting framework that encourages and disseminates good-thinking about web analytics. A fundamental goal of reporting should be to provide a truly useful framework for talking about and using measurement in the online world.
Until your organization is mature enough to have produced a system-based framework and made it a part of the conversation and culture, it’s imperative that tool access be very limited.
In my next post, I’m going to tackle the last three issues on the list. After that, I think it will be worthwhile summarizing all of the process suggestions I’ve made into a single list that can be incorporated into a broader process initiative!
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