| Summary: | Viadeo is the #1 professional social network in France with over 9 million members. Founded in 2005, the company grew its business using traditional infrastructure (about 250 servers hosted in the US). However, a number of challenges started to rise in 2014: Can the agility of our infrastructure match our software agility? In particular, how can we efficiently scale our data storage and processing capabilities? How can we build a better disaster recovery plan? How can we globally optimize our infrastructure spend? After a thorough study, Viadeo decided in early 2015 to migrate 100% of its physical infrastructure to Amazon Web Services. This presentation will cover: the thought process that led to this unconventional move (for an established company like Viadeo), our design options and trade-offs, focusing on delivery speed and risk avoidance, why we did or didn't alter parts of our stack, especially on the backend side (MySQL, ElasticSearch, HBase, Hadoop), the complete automation and testing of our infrastructure build, aka "infrastructure as code" using AWS CloudFormation, Puppet, and continuous integration and more!
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