Topographic features enable you to bypass PostgreSQL's limitations by adding extra functionality to your database through extensions that modify and enhance the execution of certain processes. These features help maintain good performance when tables grow up to billions of rows without switching to a new database. The `top 8` PostgreSQL extensions discussed in this article include PostGIS, pg_stat_statements, pgcrypto, pg_partman, postgres_fdw, pgvector, hstore, and pgpcre. TimescaleDB is also mentioned as another top extension that adds query and ingest performance boost to PostgreSQL via automatic partitioning, query planner enhancements, improved materialized views, columnar compression, and much more.