Continuous Deployment CPA Engineer Retention 
Startup Lessons Learned
SEPTEMBER 22, 2008
is an elegant way to model any service-oriented business: Acquisition Activation Retention Referral Revenue We used a very similar scheme at IMVU, although we werent lucky enough to have started with this framework, and so had to derive a lot of it ourselves via trial and error. The AARRR model (hence pirates, get it?)
Startup Lessons Learned
DECEMBER 14, 2009
A business that strives for something like this should absolutely be charging money from day one, in order to establish baselines for their two key metrics: CPA (the cost to acquire a new customer) and LTV (the lifetime value of each acquired customer). The level of engineering quality will vary. The level of design required will vary.
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