Some of the most important reasons for the new technology development in the 21st century are:

1. Fast Technological Advancement: The evolution of computing power, storage, and connectivity is more than the best of innovation an individual has ever experienced.
2. Global Interconnectedness: The world has become a big house where people communicate on the internet and globalization is ripping open borders and allowing for the free flow of knowledge, co-creation, and dissemination of ideas.
3. Growing Demand for Solutions: As the world grows more complex and faces problems like climate change and healthcare, demand arises for technology solutions while also increasing the age population.
4. Government and Business Investment: Huge investments in research and development through involved public-private partnership programs feed the fire of technological innovation.
5. AI and Machine Learning: These two technologies are revolutionizing the industry by introducing automation, predictive analytics, and personalization into the field.
6. Data-based innovation: Since collecting vast amounts of data, analyzing it, and interpreting resulting patterns have resulted in innovations in various industries since the inception of such practice, this continues to draw much interest in many fields.
7. Entrepreneurial Spirit and Startup Culture: The burgeoning enterprising spirit has given birth to technological innovations and disruption.
8. Social and Environmental Concerns: They introduce innovative technologies such as clean and renewable energy and social impact technologies aimed at making economically viable and equitable interventions.

All of this brings together forms that contribute to the speed of technological advance and shape this particular world for tomorrow.