42 Platform as a service (PAAS) featuring computer software platforms for companies that manage and administer properties for lease, in particular keeping all the information of the properties, document management, accounting, contract management, control of payments of basic services, property logbook, reports and management analytics; providing temporary use of on-line non-downloadable cloud computing software for companies that manage and administer properties for lease, in particular keeping all the information of the properties, document management, accounting, contract management, control of payments of basic services, property logbook, reports and management analytics