feat(referral): add Aiven managed data platform referral

content/page/referral/index.md

@@ -1,7 +1,7 @@
 ---
 title: Referral
 description: Referral links for tech services I use
-tags: ["Referral", "AI Tools", "Claude Code", "Cloud Storage", "Cloud Computing", "Alibaba Cloud"]
+tags: ["Referral", "AI Tools", "Claude Code", "Cloud Storage", "Cloud Computing", "Alibaba Cloud", "Database", "Aiven"]
 aliases:
   - invite
 menu:
@@ -143,6 +143,18 @@ Referral code: `A92LU5`
 
 Link: https://www.alibabacloud.com/campaign/benefits?referral_code=A92LU5
 
+## Managed Data Platforms
+
+### [Aiven](https://console.aiven.io/signup?referral_code=dgxaaojd772ygmk7bjr6)
+
+Aiven is a managed open-source data platform (Database-as-a-Service) — fully hosted databases, streaming, and analytics services deployable across all major clouds. Offerings include PostgreSQL, MySQL, Apache Kafka, ClickHouse, OpenSearch, Valkey, and more, managed from a single console. It is not a VPS or compute provider — you consume ready-to-use data services, not virtual machines.
+
+Sign up via my referral link and start the Aiven trial to get an extra **$100.00 USD** in credits to spend.
+
+Referral code: `dgxaaojd772ygmk7bjr6`
+
+Link: https://console.aiven.io/signup?referral_code=dgxaaojd772ygmk7bjr6
+
 ## Cloud Storage
 
 ### [PikPak](https://mypikpak.com/drive/activity/invited?invitation-code=75940186)