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Get the latest Optimizely news, how-to’s, best practices, demo apps, and use cases. Topics we cover: progressive delivery, feature flags, experimentation, and testing in production. If you’re looking for documentation, check it out here.

Keep Your Development Trains Running Through the Holiday Code Freeze

Keep Your Development Trains Running Through the Holiday Code Freeze

With Black Friday and Cyber Monday just about one month away, your company may already have started the season’s annual deployment freeze. The deployment freeze is a common strategy that’s used to mitigate risk during a window of time. It’s typically used during the holiday season to ensure that sites and services have 100% uptime […]

3 Ways Engineering Teams are Shifting their Practices to Run More Product Experiments


3 Ways Engineering Teams are Shifting their Practices to Run More Product Experiments

Optimizely recently hosted our fifth annual customer conference, Opticon19, in San Francisco from September 11th – 13th. We kicked the conference off with Developer Night, an evening of lightning talks where leading experimenters share their tips and tricks.  In 2018, the big takeaways for developers in experimentation were managing experiments within your own repo, experimenting […]

Introducing Performance Edge: Making Web Experiments Run Blazingly Fast

Introducing Performance Edge: Making Web Experiments Run Blazingly Fast

Today, we’re excited to announce Performance Edge, a giant leap forward in experiment performance, available today in Early Access. Performance Edge makes experiments run faster by moving experiment processing from the browser to the edge (CDN). In our testing, we’ve seen web experiments using Performance Edge load in less than 50 milliseconds (faster than the […]

How to Manage Outdated Feature Flags


Not cleaning up feature flags can introduce risk to your code base. Learn how Feature Flag Removal Day can lead to better feature management. Feature flags (aka feature toggles) are a gold standard of agile software development and continuous integration for good reason: they help teams deliver new features to customers safely, and with better […]

Feature Flags: 3 Use Cases for your Development Cycle


Feature flags allow you to slowly rollout your feature gradually rather than doing a risky big bang launch and are extremely helpful when used in a continuous integration and continuous delivery environment. However, when integrating feature flags into your development cycle it can be difficult to know where to start. I’m Asa, Optimizely’s Developer Advocate. […]

Powerful Feature Flags in Node Express Server


Feature flags allow you to slowly rollout a feature gradually rather than doing a risky big bang launch and are extremely helpful when used in a continuous integration and continuous delivery environment. At Optimizely, we commonly use feature flags to reduce the risk of complicated deploys like rolling out new APIs. However, building a feature […]

Highlights: Swift SDK Beta, Improvements to Datafile Management, Decision Notification Listener Updates

This month, we’re excited to announce the release of our Swift SDK beta, major improvements to our Javascript SDK datafile management capabilities, and updates to the DECISION listener notification.   Release of Swift SDK 3.1.0 Beta The Optimizely X iOS Swift SDK 3.1.0-beta is written completely in Swift and uses all of its native types and […]