This thesis explains technologies needed for developing an Internet application. git distributed version control system is used for managing applications code, and thesis gives analysis of system structure, representation of that structure trough whole repository, concept of commits on which whole system is based all the way to techniques used to take advantage of revision history concept. At the end there a list of advantages and disadvantages of this system. Web server chapter discusses about most used servers on today's market, Apache httpd and Nginx. This chapter discusses basic concepts, architecture, work modes, advantages and disadvantages of individual systems and gives a comparison between them. Phalcon PHP framework is used for Internet application development with its Model View Controller (MVC) structure and set of features through services such as autoloading, dependency injections, routing, view mechanisms. Application programming interface (API) chapter discusses most used API technologies in Internet applications such as REST, SOAP and JSON-RPC. Chapter explains work principles and communication protocols, and gives comparisons between SOAP and REST. After API, thesis discusses cache mechanism in web applications. Technologies such as APC, Memcached, Redis and Varnish are explained through their work modes, data types, data (non)persistency. Object oriented paradigm is prefered way of developing large and complex Internet applications so OOP chapter discusses advantages and disadvantages of this approach. Last chapter of this thesis discusses ways to use search feature in web applications trough covering search engines such as Sphinx and ElasticSearch.