1. Market Growth Calculation – Computation of the difference in percentage growth of music streaming subscribers between 2010-2011 and 2019-2020. 2. Product Life Cycle and Marketing Strategy – Analysis of how the marketing approach for music streaming changed between 2010 and 2019 based on the product life cycle. 3. Stock Market Flotation Impact – Assessment of the potential effects of stock market flotation on businesses like Spotify. 4. Challenges of Operating in a Dynamic Market – Evaluation of the consequences for companies like Spotify in an ever-evolving industry. 5. Strategic Market Expansion – Comparison of the benefits of focusing on existing markets in Europe and the USA versus expanding into emerging markets such as Asia. 6. Revenue Model Adaptation – Examination of the impact of video streaming services as an additional revenue stream for companies like Spotify.