Method for an improved and simplified operation and architecture of a central office point of delivery within a broadband access network of a telecommunications network and/or for the enhanced execution of network attachment tasks and/or further functional or configuration tasks within the central office point of delivery, wherein the central office point of delivery and/or the broadband access network comprises -- access network facing nodes (81, 82, 83), -- a control function and/or a switching fabric and/or service edge nodes (171, 172, 173), wherein the execution of network attachment tasks and/or further functional or configuration tasks within the central office point of delivery involves using an execution state database as well as stateless execution service functionalities being assigned to different execution stages realized within the central office point of delivery, and a message bus connecting the different execution stages, wherein the execution stages comprise at least an access stage, a processing stage, and a device stage, wherein the execution service functionalities - in order to process or execute the different network attachment tasks and/or further functional or configuration tasks - generate a plurality of messages on the message bus and consume a plurality of messages from the message bus, wherein the method comprises the following steps: -- in a first step, a trigger request regarding the network attachment task and/or further functional or configuration task is received by a first execution service functionality (271, 271', 271", 272, 272'), the first execution service functionality (271, 271', 271", 272, 272') being assigned to or being part of the access stage, wherein, as a reaction, the first execution service functionality (271, 271', 271", 272, 272') generates at least a first message on the message bus, -- in a second step, the first message on the message bus is consumed by a second execution service functionality, the second execution service functionality being assigned to or being part of the processing stage, wherein, as a reaction, the second execution service functionality generates at least a second message on the message bus, -- in a third step, the second message on the message bus is consumed by a third execution service functionality (276, 276', 276", 277, 277', 278, 278'), the third execution service functionality (276, 276', 276", 277, 277', 278, 278') being assigned to or being part of the device stage, wherein, as a reaction, the third execution service functionality (276, 276', 276", 277, 277', 278, 278') configures the control function and/or the switching fabric and/or the access network facing nodes (81, 82, 83) and/or the service edge nodes (171, 172, 173). -- access network facing nodes (81, 82, 83), -- a control function and/or a switching fabric and/or service edge nodes (171, 172, 173), -- in a first step, a trigger request regarding the network attachment task and/or further functional or configuration task is received by a first execution service functionality (271, 271', 271", 272, 272'), the first execution service functionality (271, 271', 271", 272, 272') being assigned to or being part of the access stage, wherein, as a reaction, the first execution service functionality (271, 271', 271", 272, 272') generates at least a first message on the message bus, -- in a second step, the first message on the message bus is consumed by a second execution service functionality, the second execution service functionality being assigned to or being part of the processing stage, wherein, as a reaction, the second execution service functionality generates at least a second message on the message bus, -- in a third step, the second message on the message bus is consumed by a third execution service functionality (276, 276', 276", 277, 277', 278, 278'), the third execution service functionality (276, 276', 276", 277, 277', 278, 278') being assigned to or being part of the device stage, wherein, as a reaction, the third execution service functionality (276, 276', 276", 277, 277', 278, 278') configures the control function and/or the switching fabric and/or the access network facing nodes (81, 82, 83) and/or the service edge nodes (171, 172, 173).