"open core" meaning in English

{
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      "expansion": "open core (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "2012, Simon Phipps, Open Source Strategies for the Enterprise, O'Reilly Media",
          "text": "We deliver a fully functional product with our community edition. You can download it under a GPL v3 license. But, additionally, we provide enterprise features only if you pay for them. It's open core.",
          "type": "quotation"
        },
        {
          "ref": "2018, Gordon Haff, How Open Source Ate Software […], Apress, page 109",
          "text": "In part because the upsell features are often not clearly partitioned off from the core project, many open core products require their contributors to sign a contributor license agreement (CLA), which assigns rights to the commercial owner of the product.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A business model for software whereby the core is open-source and free, while closed-source add-ons are available for purchase."
      ],
      "id": "en-open_core-en-noun-uPDERKGD",
      "links": [
        [
          "business model",
          "business model"
        ],
        [
          "software",
          "software"
        ],
        [
          "core",
          "core"
        ],
        [
          "open-source",
          "open-source"
        ],
        [
          "closed-source",
          "closed-source"
        ]
      ],
      "related": [
        {
          "word": "open source"
        },
        {
          "word": "freemium"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "open-core model"
      ]
    }
  ],
  "word": "open core"
}

{
  "head_templates": [
    {
      "args": {
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      "expansion": "open core (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "open source"
    },
    {
      "word": "freemium"
    }
  ],
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      "examples": [
        {
          "ref": "2012, Simon Phipps, Open Source Strategies for the Enterprise, O'Reilly Media",
          "text": "We deliver a fully functional product with our community edition. You can download it under a GPL v3 license. But, additionally, we provide enterprise features only if you pay for them. It's open core.",
          "type": "quotation"
        },
        {
          "ref": "2018, Gordon Haff, How Open Source Ate Software […], Apress, page 109",
          "text": "In part because the upsell features are often not clearly partitioned off from the core project, many open core products require their contributors to sign a contributor license agreement (CLA), which assigns rights to the commercial owner of the product.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A business model for software whereby the core is open-source and free, while closed-source add-ons are available for purchase."
      ],
      "links": [
        [
          "business model",
          "business model"
        ],
        [
          "software",
          "software"
        ],
        [
          "core",
          "core"
        ],
        [
          "open-source",
          "open-source"
        ],
        [
          "closed-source",
          "closed-source"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "open-core model"
      ]
    }
  ],
  "word": "open core"
}