There are a lot of scary CX statistics floating around right now. Like how 78% of consumers have bailed during a transaction because of a poor service experience. Or how 52% of consumers say they’re less likely to engage with a company following a bad mobile experience.

We know that improving quality across the board is a surefire way to keep customers happy, but if you’re not aiming for quality consistently, then all efforts are for naught.

Consistency is critical to quality. Patient consumers who give your product multiple chances will never know what to expect if product results and behavior is inconsistent. But impatient people (those who ditch out after one feature glitch) will be lost customers, possibly forever.

Good QA should naturally have an eye on consistency. That’s why we work so hard to make sure as many variable combinations (whether those variables be device, motivation, or location) are covered as possible within the given cycle timeline and resources.

Moving beyond strategic test planning, here are five things to look out for to nail quality consistently.

1. Consistency in published APIs

It’s important to make a good impression on all of your users, from those who will touch just the basic features to those who will rely on your extensive APIs.

In large organizations, published APIs can be written by dozens of developers, easily leading to inconsistencies in function names. Internally, developers can use different variable names and understand all of them because of their familiarity, but to outside developers, seemingly cosmetic issues like incongruent names can create confusion and a poor opinion of your brand.

Ways to remedy this include assigning one person ownership of the names and attributes used in the API syntax and for the QA department to review all APIs, especially when the documentation is too large for one person to handle alone.

2. Meeting market standards

Consistency isn’t about you (the business).

It’s about them (the customer).

What this really boils down to is that you need not only make sure you’re consistent with yourself, but with the rest of the world, or at least the market and industry standards.

Here’s a simple example: let’s say that a user fails to login to your mobile website. They get the login error message for using the wrong password, and both their password and email address have disappeared from the form upon reload.

But in all the other mobile websites they use every day, if they type the wrong password, then at least their email or username is retained so they don’t have to type it in again.

In this scenario, your company’s mobile website inconsistent with the rest of the customer’s life. Websites and apps (whether mobile or desktop) just keep getting better and better, and you have to keep up with expectations.

By understanding the pace of your industry, your competitors, your customers, and their needs, QA testers can keep an eye out for inconsistencies that will impact the perception of your company and the user experience.

3. Style and navigation consistency

When it comes to UI consistency, a lot is at stake. The trouble with just about any software product is getting people to use it. A consistent UI has the power to reduce learning, reduce confusion and ultimately increase adoption. (That’s a big deal).

With UI, there’s external consistency (things like putting the logo on the left side of your website because everyone else is doing it) and internal consistency–using the same colors and icons for features on your mobile app that are also in your mobile web app.

Icons, colors, element placement and order…all of these things should be consistent so that when a user is switching between devices, there’s no confusion.  For multiple versions of a product, and even within a single app, QA testers can evaluate UI consistency with the ultimate goal of improving user adoption.

4. Rolling out massive upgrades

Consistency is a virtue for trains: what we want from a philosopher is insights, whether he comes by them consistently or not. – Stephen Vizinczey

Well, what we want from software is consistency and insights. And that’s where things get tricky.

Most people are familiar with a time when their favorite app got a whole new look–and lost a lot of usability. With big changes, things get missed. A lack of mobile responsiveness across devices can be a huge problem when an app gets a new UI.

To maintain product quality during updates and big rollouts, the QA team can help make the delivery schedule more doable for the entire organization. Which users should get the upgrade first? At what speed? Rather than feel frazzled by having to rapidly test major code changes, QA can help advocate for release times that will better serve all users.

5. Consistent documentation for testers, developers, and users

Perfectly consistent documentation is critical for:

  • Requirements and analysis
  • Test planning and instructions
  • User guides

Internally, it’s understandable why features and functions should be called by the same names. That way it’s easier for testers and developers to communicate and collaborate, and new employees can more rapidly get up to speed.

But it’s too easy to forget about external documentation. How often do you review user guides? There may be PDF manuals published on the website or sent via email autoresponder that use different names or procedures than what is currently featured in the app.

The QA department can keep a log of all customer-facing materials, and review them for any inconsistencies following big software changes, then notify the marketing or customer support team if anything is found to be out of date.

Offering not only relevant, but consistent documentation to users can go a long way towards reinforcing the opinion of your company as high quality.

Don’t let inconsistencies slide (unless they don’t matter)

Even though consistency is a huge factor of quality, it’s alarmingly easy to let little inconsistencies slip past–whether in dealings from department to department, with external developers, or even with users.

But remember, not all product inconsistencies are bad (like when a product is inconsistent with its less desirable past form). You must always take stock of your priorities.

Put on your “consistency glasses” for a minute, and look through them. Think about these five examples and consider any other areas within your organization where inconsistencies might be lurking.

When taking any steps towards improving QA processes, be sure to pause and make special preparations for maintaining consistency in (nearly) all things.

<p>Dayana is a QA engineer turned technology writer living in Milan, Italy. She’s always down for a smoothie.</p>