Traditionally quantum computer development (QC) has been done with a monolithic approach – one entity manufacturing and sourcing all components. This is costly, time-consuming and risky. In order to accelerate quantum computer development, IMPAQT envisions a modular approach: Independent companies focus on different parts of the stack. In December 2020 members of the IMPAQT consortium signed an agreement to collaborate on ensuring that different building blocks of QC are interfaced well. In the future, this will allow quantum computer manufacturers to easily integrate subsystems.