Building the world’s smart sustainable cities together is one of 17 goals (SDG 11) of the UN’s 2030 Sustainable Development Goals. In 2018, the UN High-level Political Forum (HLPF) met to discuss some goals, SDG 11 (sustainable cities and communities) being one of them. With rapid urbanization and movement of people from rural to urban cities, the growth of cities is staggering. In today’s society, mass potentiality also bring challenges to maximize Information Technology (IT) and Internet of Things (IoT). I cannot emphasize enough the impact of “big data” and how “data is king”. Through the indicators and targets of SDG 11, we are able to come to solutions that truly enable cities to become smart and sustainable.