Data Science plays a critical role in key aspects of consumer internet businesses. It is central to the economics of traffic, demand and conversion. Management of growth rests on a quantitative understanding of user lifecycles, attrition and lifetime values. Companies rely on data-centric solutions for growing traffic, improving the returns from the traffic via conversion and monetization, and instrumentation/testing/analysis to fine-tune the user experience. In commerce-centric businesses, Data Science is also critical to inventory planning, resource allocation, routing, facility location and other areas of optimization. At Short Proof, we offer end-to-end Data Science capabilities to companies in the consumer internet sector. We bring together extensive domain knowledge and experience; cross-functional capabilities that span analysis, research, engineering, product management and leadership; and expertise in a range of areas such as targeting and relevance, marketing optimization, advertising and ad networks, monetization models, sponsored search; user interface optimization, A/B testing and data frameworks for the consumer web, and optimization of supply chains and operations. The Short Proof difference: -- A nuanced quantitative understanding of complex user lifecycles and the relationship between user experience on one hand and lifecycle parameters such as attrition and lifetime value on the other. That understanding drives product decisions and prioritization, and it also powers the optimization of user acquisition machinery. -- Sophisticated growth management models link user acquisition and spend optimization, lifetime value models, attrition prediction, re-engagement and incentive programs -- Business model optimization, including keeping a tab on the pulse of a young user base and evolving user behaviors, and tweaking the relationship with the user to take advantage of discovered patterns and sidestep threats and risks.