The diploma thesis deals with the assessment of the effectiveness of on-line communication with the application for DOX Centre for Contemporary Art in Prague. It focuses on clarifying the theoretical framework of principles of social networks, mapping new trends and approaches in on-line communication and marketing. Part of the work is given to the identification of the percentage of the visitors of DOX who only search for information about exhibitions and other related program via the Internet. The emphasis is on research of the share of real customer of DOX to fan base on the Facebook social network. To make on-line communication more effective the priorities are set for various on-line channels with the tool for monitoring of mentions on the internet related to DOX. According to the fact that Facebook is an important interactive channel for DOX, there is created detailed analysis of the publications of contributions and the resulting recommendations for implementation. In conclusion, DOX expresses the contribution of the diploma thesis.

La presente investigación tiene como propósito encontrar la relación entre las promociones online a través de Instagram, Facebook y mailing en su relación con la intención de compra en el entorno offline. Para ello, se realizó un análisis mixto de carácter cualitativo y cuantitativo. Con respecto al análisis cualitativo, se realizaron entrevistas a expertos y un focus group al target. También se realizó un análisis cuantitativo bivariado a través de correlaciones mediante encuestas a 150 mujeres jóvenes entre 18 a 24 años, los datos fueron procesados utilizando un análisis de correlaciones. Como resultado se obtuvo que existe una relación más fuerte entre Instagram y la intención de compra y, en el caso de Facebook esta es más débil. Con respecto a la plataforma mailing se encontró que no existe relación con la intención de compra. Dichos resultados son de utilidad para el sector estudiado debido a que se ha podido conocer la opinión sobre qué tipo de red social es la más utilizada. De esta forma, las empresas deberían de comunicar sólo en redes sociales como Facebook e Instagram y descartar otras herramientas que son secundarias para el target, porque aparentemente las mujeres jóvenes no esperan este tipo de información como son las promociones de venta vía mailing. / The purpose of this research is to find the relationship between online promotions through Instagram, Facebook and mailing in relation to the purchase intention in the offline environment. For this, a mixed analysis of qualitative and quantitative character was carried out. With respect to the qualitative analysis, expert interviews and a focus group were conducted on the target. A bivariate quantitative analysis was also carried out through correlations through surveys to 150 young women between 18 and 24 years old, the results were analyzed using correlation analysis. From this, it has been found that there is a stronger relationship on Instagram than on Facebook with the purchase intention, in the case of the mailing it was found that there is no relationship with the purchase intention. These results are useful for the sector studied because it has been possible to know the opinion on what type of social network is the most used. In this way, companies should only communicate on social networks such as Facebook and Instagram and discard other tools that are secondary to the target, because apparently young women do not expect this type of information such as sales promotions via mailing. / Trabajo de investigación