040000 tree 286f119b31ad3951a27d91603ee8a53f84038820	basics
040000 tree 80b651718ad36dd458bbd4f259da539dac8ec5c2	deployment
040000 tree 0de1d8468ccdb60cb0ea5db19c8ea410541b2f30	operation
040000 tree 7f0aae71a0bc71a93d3a43f315c67b7c6d560ba9	security
040000 tree 35f005e62d322caa9be25234a089592823d24c1b	storage