Perpetual beta

Software development processes are experiencing a shift from occasionally releasing new versions with huge changes and lots of new features to frequently adding small changes to their products. Applications being developed in this way are described as being in a ‘perpetual beta’ stage. Nathan Wallace presents the diagram below as illustrating the perpetual beta development approach and says about it “Adopting this cycle brings certainty and momentum to end users while ensuring continuous improvement and low risk release management for developers. Developers move seamlessly from one version to the next, with only a small cross-over for bug fixing during the Beta period.” (Wallace, 2007)

Release cycle diagram

An example of perpetual beta software is the suite of programs by CloudBerry Lab. These programs demonstrate some of the characteristics and best practices of the perpetual beta approach. CloudBerry was founded in 2008 but has several versions out already. This shows frequent releases and therefore some adherence to the best practice of ‘release early and release often’ (in examining the site, I didn’t find evidence of what stage (how developed/bug-free) the new features were at when they were released, so I can’t tell how ‘early’ these releases were).

Another characteristic of ‘perpetual beta’ software is the continual addition of features in place of ‘version’ releases and again, CloudBerry partially conforms to this. Whilst it does release in ‘versions’, the number of changes introduced with a new version is relatively low, meaning the ‘versions’ could perhaps be classified as small, continual updates and not substantially different ‘editions’. One of the benefits of changing things slowly is that it gives users a chance to adjust to the new features instead of throwing them into a completely unknown environment.

CloudBerry also mentions ‘coming soon’ features, indicating that the software is not currently complete and remains in a beta stage. This could be helpful in a few ways – firstly by creating anticipation and a sense of activity/progress that catches and holds the users’ attention and secondly by helping to lessen the shock and bafflement of the announced changes when they arrive.

Beta testers are important because it is almost impossible for developers to test their software in all of the various conditions that might occur” (Digital River, 2009) Beta testing is an enormously important part of any software production and, interestingly, CloudBerry seems to implement it differently at different stages of software development. In the earlier stages of development, CloudBerry invites people to sign up as beta testers. This is conformance to the best practice of ‘engaging users as co-developers and real-time testers’ and ‘split testing’ (where only a portion of site visitors are shown ‘coming’ or ‘in development’ features and asked to provide relevant feedback). After that, however, the option to become a beta tester is removed (presumably when the software is first formally released).

Once the software has been officially launched, CloudBerry lets it fall into the ‘version release’ pattern (as addressed above) with new features continuing to be added in small clusters. At that stage, a link is still provided that takes visitors to a place where comments can be left and read (meaning users can continue to give feedback).

Provide testers with incentives to communicate and provide feedback. Beta testers that provide comprehensive feedback will often welcome, and expect, a complimentary release copy.” (Digital River, 2009) On the page where visitors can sign up to be beta testers, CloudBerry makes it clear that they will “grant a limited number of free licenses to the most active beta testers who will provide the most valuable feedback”.

Beta testing isn’t always only beneficial to the software developers. Thomas Nau stated that “doing betas and implementing new OS releases early helped a lot in system administration and overall utilization of the machines due to new tools and features. He described his positive experience in one sentence: “Betas ensure that you stay on the leading edge of technology.” (Nau in ‘Get the best benefits from using beta software’, 2008) By making users aware of the benefits to themselves, software developers may be able to attract more beta testers and so improve the feedback they receive about the beta software.

Overall, though CloudBerry doesn’t implement all of the best practices related to perpetual beta software, it does include quite a few of them and relatively successfully so.


One Response to “Perpetual beta”

  1. adamcarew Says:

    Hello! very nice post! I really like the pics they explain the pattern very clearly!

    Adam Carew

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