Talk (in Russian) for Yet another Conference 2013, October 2d, Moscow Abstract: More than 10 years Yandex launches various Internet services such as Maps, Mail, Disk, Music, Auto. During this long period of time we have got a lot of experience that could be useful for other web developers. In this talk we will share several stories about several services of Yandex and our common library of blocks. In the context of search services we will talk about full stack of BEM technologies, server JavaScript and automatised web development. We will describe an experience of Yandex.Direct which has a non-stop frontend development and refactoring workflow. We also tell about MVC-pattern (bem-mvc) realisation and converting data in comfortable data view format. Using Yandex.Maps and its API example we will show how you can adapt BEM flexibly taking into consideration special project's needs. We also talk about open source and why we went there and what we have learned. Promise you, it will have a lot of interesting details. Video (Russian) https://events.yandex.ru/lib/talks/1108/