This bachelor thesis focuses on website optimization from both the search engine and the end user points of view. The thesis is divided in two logical parts, theoretical and practical. The theoretical part explains basic principles associated with Search Engine Optimization (SEO) followed by a description of User Interface Optimization. The practical part analyzes the overall quality of booking agency website with more detailed specification of problematics issues with regards to the optimization. Possibilities for improvements have been identified by a thorough analysis of the website as well as based on results of an End User Satisfaction survey. The main benefit of the practical part are already applied suggested improvements, which have...