Clarify OSS definition for vendors (#4788)

Co-authored-by: opentelemetrybot <[email protected]>
Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

Author: 3 people

content/en/ecosystem/vendors.md

@@ -12,6 +12,11 @@ Some organizations provide a [distribution](/ecosystem/distributions/) (of
 customized OpenTelemetry components), that provides additional capabilities or
 for improved ease of use.
 
+Open Source (OSS) refers to a vendor who has an observability product that is
+[open source](https://opensource.org/osd). The vendor may still have other
+products that are closed source, such as a SaaS offering that hosts an open
+source product for their customers.
+
 {{% ecosystem/vendor-table %}}
 
 ## Add your organization

static/refcache.json

@@ -6291,6 +6291,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-30T16:14:58.880711-05:00"
   },
+  "https://opensource.org/osd": {
+    "StatusCode": 200,
+    "LastSeen": "2024-07-03T16:52:21.124428756Z"
+  },
   "https://opentelemetry-cpp.readthedocs.io/en/latest/otel_docs/classopentelemetry_1_1sdk_1_1trace_1_1SpanExporter.html": {
     "StatusCode": 200,
     "LastSeen": "2024-02-14T16:43:04.418679+01:00"