At its re:Invent user conference in Las Vegas, public cloud infrastructure provider Amazon Web Services (AWS) today announced that its Aurora managed cloud database engine now supports the popular PostgreSQL structured database.

Amazon already lets developers store and retrieve data using PostgreSQL through its Relational Database Service (RDS). RDS added support for PostgreSQL in 2013. Of course, developers could also just install the open-source PostgreSQL atop AWS computing and storage infrastructure on their own. Sure enough, it will be possible to migrate PostgreSQL databases from RDS to Aurora.

PostgreSQL support is the top request from customers of Aurora, AWS chief executive Andy Jassy said today.

Today’s announcement builds on the launch of the Aurora database service in 2014. At the time it was touted as a great tool for companies that were heavily reliant on the MySQL database software. Now Aurora is becoming more powerful.

Other public clouds, including Microsoft Azure and Google Cloud Platform, offer their own relational database services.

Fortune reported on AWS’ plans for the new PostgreSQL service earlier this month.

A blog post on the news is here.