Many medium or low Earth orbit satellites are needed to maintain continuous coverage over an area. A constellation of satellites can communicate with, or keep an eye on, the same places on Earth at all times. A single satellite covers only a small area, which moves as the satellite travels at the velocity needed to maintain its orbit. A web, or constellation, of satellites around the planet can provide access to many corners of the world, creating global or near-global coverage and connectivity. They are connected to globally distributed ground stations, and even via inter-satellite communication, and can enable communications in unserved and underserved communities, enhance global monitoring and observation, and greatly reduce the time needed to obtain science and technology results. The need to utilise and access space infrastructure in a timely and cost-effective manner, without the need or desire to understand it, is increasing. With shorter development times, risk distribution spread over multiple spacecraft, the benefits of lower latency to the reduction in economic space barriers for all types of companies and countries, the adaptability and flexibility offered by a CubeSats constellation is enormous.