Following is a Postman Collection which I need to use for a task management application. Where each user can add, update, and delete his tasks. I’m confused how to use this collection. Would I need a backend or without that? I would use redux-toolkit for state management and local storage for user sessions. What is the use of this collection?

{
    "info": {
        "_postman_id": "ff0a72cf-0e97-4f4c-9112-47cbce7aa220",
        "name": "CL Task Manager",
        "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
        "_exporter_id": "16391054"
    },
    "item": [
        {
            "name": "Auth",
            "item": [
                {
                    "name": "v1/login",
                    "event": [
                        {
                            "listen": "test",
                            "script": {
                                "exec": [
                                    "pm.collectionVariables.set("AccessToken", JSON.parse(responseBody).data.token);"
                                ],
                                "type": "text/javascript",
                                "packages": {}
                            }
                        }
                    ],
                    "request": {
                        "method": "POST",
                        "header": [
                            {
                                "key": "Accept",
                                "value": "application/json",
                                "type": "text"
                            }
                        ],
                        "body": {
                            "mode": "raw",
                            "raw": "{n    "email":"[email protected]",n    "password":"12345678"n}",
                            "options": {
                                "raw": {
                                    "language": "json"
                                }
                            }
                        },
                        "url": {
                            "raw": "{{BaseUrl}}/v1/login",
                            "host": [
                                "{{BaseUrl}}"
                            ],
                            "path": [
                                "v1",
                                "login"
                            ]
                        }
                    },
                    "response": []
                },
                {
                    "name": "v1/register",
                    "event": [
                        {
                            "listen": "test",
                            "script": {
                                "exec": [
                                    ""
                                ],
                                "type": "text/javascript",
                                "packages": {}
                            }
                        }
                    ],
                    "request": {
                        "method": "POST",
                        "header": [
                            {
                                "key": "Accept",
                                "value": "application/json",
                                "type": "text"
                            }
                        ],
                        "body": {
                            "mode": "raw",
                            "raw": "{n    "name":"arham",n    "email":"[email protected]",n    "password":"12345678"n}",
                            "options": {
                                "raw": {
                                    "language": "json"
                                }
                            }
                        },
                        "url": {
                            "raw": "{{BaseUrl}}/v1/register",
                            "host": [
                                "{{BaseUrl}}"
                            ],
                            "path": [
                                "v1",
                                "register"
                            ]
                        }
                    },
                    "response": []
                },
                {
                    "name": "v1/logout",
                    "event": [
                        {
                            "listen": "test",
                            "script": {
                                "exec": [
                                    ""
                                ],
                                "type": "text/javascript",
                                "packages": {}
                            }
                        }
                    ],
                    "request": {
                        "method": "POST",
                        "header": [
                            {
                                "key": "Accept",
                                "value": "application/json",
                                "type": "text"
                            }
                        ],
                        "body": {
                            "mode": "raw",
                            "raw": "",
                            "options": {
                                "raw": {
                                    "language": "json"
                                }
                            }
                        },
                        "url": {
                            "raw": "{{BaseUrl}}/v1/logout",
                            "host": [
                                "{{BaseUrl}}"
                            ],
                            "path": [
                                "v1",
                                "logout"
                            ]
                        }
                    },
                    "response": []
                }
            ]
        },
}