A startup is a unique type of young company that usually operates within informational industries. They are often innovative and agile even when they grow. This type of company has developed during the technological revolution in the area of Silicon Valley and with the rise of the Internet, it grew in the most popular methodology in building a disruptive business. As an answer to a so-called dot-com bubble several methodologies like Customer development, Lean Startup, and lean canvas have been developed. These methodologies have a goal of making it easier to create startups while making them even more agile. Methodologies have shown great efficiency in startup creation so the current biggest problem in startup lifecycle is the process of scaling. Scaling is a process in which the number of users is being grown while simultaneously scaling the whole startup organization. It is also a very risky process and most of the startups fail in this phase. To scale successfully startups have to meet several prerequisites. A startup ecosystem is the main prerequisite in successful startup growth as it can provide the startup with the necessary capital, workforce and stable market. The second prerequisite is internationalization as it is a goal of the majority of startups but it also brings big risks so it requires a methodical and careful approach. Final prerequisite of successful scaling is defining the business model of startup together with the most important metrics for measuring performance. Startups that are located within a healthy ecosystem with a methodical approach to internationalization and focus on key metrics for its business model will have better chances of scaling successfully.