This primer argues that digital capitalism led by Big Tech is a feminist issue. It highlights key areas of concern for feminist movements challenging corporate power and seeking to advance economic justice. It discusses how structural issues around digital economies impact feminist agendas around reducing inequality, protecting socioeconomic rights for marginalised groups, and valuing people and planet. Finally, it will briefly discuss alternatives and movements that are challenging the power of Big Tech and appropriating technologies to bring feminist visions to life.