The cardinal revolution of business growth and development is a process of transition to flexible integration of dynamic systems and platforms, distinguishing innovative methodologies in the organisation of the process of value creation and addition. There are situations of the creation of digital environments based on freely and flexibly integrating components. Based on a review of theoretical and methodological publications dedicated to the tools for building digital ecosystems - Application Programming Interface (API), there is a conceptualisation and its appreciation from a holistic viewpoint. The paper sees and discusses the emergency of API as it relates to the economy which is generally used to denote the creation of a new value based on API. The critical roles and security challenges in associated with the adoption and application of the API are specified. The article study the implementation strategies of the API for business organizational structures, and provides recommendations for adopting an API a tool of business growth and development