Continuous Deployment Design Product Development Viral 
Startup Lessons Learned
SEPTEMBER 22, 2008
I break the answer to that question down into three engines: Viral - this is the business model identified in the presentation as "Get Users." Here, the key metrics are Acquisition and Referral, combined into the now-famous viral coefficient. If the coefficient is > 1.0 , you generally have a viral hit on your hands.
Startup Lessons Learned
DECEMBER 14, 2009
I had a lot of use for this concept back when I worked on game design and virtual worlds. In order to maintain game play balance, game designers have to take into account the needs of customers who have an excess of four different assets: time , money , skill , and passion. Having a balanced ecosystem is what game designers strive for.
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Startup Lessons Learned
DECEMBER 16, 2008
Lessons Learned by Eric Ries Tuesday, December 16, 2008 Engagement loops: beyond viral Theres a great and growing corpus of writing about viral loops, the step-by-step optimizations you can use to encourage maximum growth of online products by having customers invite each other to join.
Startup Lessons Learned
APRIL 7, 2010
In fact, the curse of product development is that sometimes small things make a huge difference and sometimes huge things make no difference. Some designers also hate optimizing (which is why the “41 shades of blue&# test is so famous – a famous designer claims to have quit over it ).
Startup Lessons Learned
SEPTEMBER 15, 2008
This kind of result is typical when you ship a redesign of some part of your product. The new design improved on the old one in several ways, but these improvements didnt translate all the way through the funnel. Usually, I think that means youve lost some good aspect of the old design.
Startup Lessons Learned
SEPTEMBER 12, 2008
vs. sustainable: Compare this to the renewable strategies, like viral marketing, SEO, widgets, and ads, which can scale into 10s of millions of users but are primarily centered around tough, non-user centric work. Case Study: Continuous deployment makes releases n. Problem is, you inevitably become yesterday’s old news.
Startup Lessons Learned
SEPTEMBER 18, 2008
On Facebook, viral distribution has proved decisive. Those companies who have learned to build apps that optimize the viral loop dominate in every category where they compete. So far, I dont see any apps that have much in the way of viral distribution. We're leading the charge in enabling viral distribution for iPhone apps.
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