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 ## DBaaS
 
    * [airtable.com](https://airtable.com/) — Looks like a spreadsheet, but it's a relational database, unlimited bases, 1,200 rows/base and 1,000 API requests/month
-   * [Astra](https://astra.datastax.com/register) — Cloud Native Cassandra as a Service with 5GB free tier
+   * [Astra](https://astra.datastax.com/register) — Cloud Native Cassandra as a Service with [40GB free tier](https://docs.datastax.com/en/astra/docs/datastax-astra-database-limits.html)
    * [cloudamqp.com](https://www.cloudamqp.com/) — RabbitMQ as a Service, up to 1M messages/month and 20 connections free
    * [elephantsql.com](https://www.elephantsql.com/) — PostgreSQL as a service, 20 MB free
    * [FaunaDB](https://fauna.com/) — Serverless cloud database, with native GraphQL, multi-model access and daily free tiers up to 100 MB