The Soyuz-2.1b is a Russian launch vehicle designed to transport payloads into orbit. It is part of the Soyuz family, which has been in use since the 1960s. The rocket features advanced technology, including a digital flight control system, and is capable of launching satellites and crewed missions. This version of the Soyuz rocket can carry a payload of up to 8,000 kilograms to low Earth orbit. It is often used for commercial satellite launches and resupply missions to the International Space Station (ISS). The Soyuz-2.1b has become a reliable choice for various space missions.