diff --git a/Services/Website/.env.local b/Services/Website/.env.local
index 865548e..64d9a99 100644
--- a/Services/Website/.env.local
+++ b/Services/Website/.env.local
@@ -37,25 +37,25 @@ LOG_LEVEL=debug
 
 # --- Persistence ----------------------------------------------------------------
 
-# Persistence driver: inMemory (default, no infrastructure) or mysql.
+# Persistence driver: inMemory (default, no infrastructure) or postgres.
 DATABASE_DRIVER=inMemory
 
-# MySQL/MariaDB connection, used when DATABASE_DRIVER=mysql.
-# `mariadb` is the local database's Compose service name; use 127.0.0.1 when
+# PostgreSQL connection, used when DATABASE_DRIVER=postgres.
+# `postgres` is the local database's Compose service name; use 127.0.0.1 when
 # running the app directly with `swift run`.
 DATABASE_HOST=localhost
 
 # Port of the database to connect to.
-DATABASE_PORT=3306
+DATABASE_PORT=5432
 
 # Name of the database to connect to.
-DATABASE_NAME=loud-ams
+DATABASE_NAME=loud
 
 # Username of the database to connect as.
-DATABASE_USERNAME=loud-ams
+DATABASE_USERNAME=loud
 
 # Provide the real password via the environment or a secret — never commit it.
-DATABASE_PASSWORD=loud-ams
+DATABASE_PASSWORD=loud
 
 # TLS posture when connecting: off | prefer | require (use `require` in production).
 DATABASE_TLS=off
diff --git a/Services/Website/Makefile b/Services/Website/Makefile
index 2ed486e..a81fb8a 100644
--- a/Services/Website/Makefile
+++ b/Services/Website/Makefile
@@ -73,11 +73,11 @@ db-mount: ## Start the local database instance
 	@docker compose \
 		--profile database up \
 		--detach \
-		--wait mariadb
+		--wait postgres
 
 .PHONY: db-migrate
 db-migrate: ## Run the migrations against the local database instance
-	@DATABASE_DRIVER=mysql \
+	@DATABASE_DRIVER=postgres \
 	DATABASE_HOST=127.0.0.1 \
 	DATABASE_TLS=off \
 	swift run \
@@ -88,21 +88,22 @@ db-migrate: ## Run the migrations against the local database instance
 db-shell: ## Open a SQL shell on the local database instance
 	@docker compose \
 		--profile database \
-		exec mariadb \
-		mariadb \
-			--user=$(or $(DATABASE_USERNAME),loud) \
-			--password=$(or $(DATABASE_PASSWORD),loud) \
-			$(or $(DATABASE_NAME),loud)
+		exec \
+		--env PGPASSWORD=$(or $(DATABASE_PASSWORD),loud) \
+		postgres \
+		psql \
+			--username=$(or $(DATABASE_USERNAME),loud) \
+			--dbname=$(or $(DATABASE_NAME),loud)
 
 .PHONY: db-unmount
 db-unmount: ## Stop and remove the local database instance (keeps the data volume)
 	@docker compose \
-		--profile database down mariadb
+		--profile database down postgres
 
 .PHONY: db-reset
 db-reset: ## Stop and remove the local database instance and delete its data volume
 	@docker compose \
-		--profile database down mariadb \
+		--profile database down postgres \
 		--volumes
 
 # --- Assets minification ------------------------------------------------------
diff --git a/Services/Website/docker-compose.override.yml b/Services/Website/docker-compose.override.yml
index 4ca579d..e3101da 100644
--- a/Services/Website/docker-compose.override.yml
+++ b/Services/Website/docker-compose.override.yml
@@ -23,31 +23,28 @@ services:
   # Local development database, started only with the `database` profile so a plain `docker compose up` still runs the
   # in-memory backend:
   #
-  #   docker compose --profile database up mariadb
-  mariadb:
-    image: mariadb:11
+  #   docker compose --profile database up postgres
+  postgres:
+    image: postgres:18
     container_name: ${HOST_OWNER:-loud}-db
     restart: unless-stopped
     profiles:
       - database
     ports:
-      - "127.0.0.1:${DATABASE_PORT:-3306}:3306"
+      - "127.0.0.1:${DATABASE_PORT:-5432}:5432"
     environment:
-      MARIADB_RANDOM_ROOT_PASSWORD: "yes"
-      MARIADB_DATABASE: ${DATABASE_NAME:-loud-ams}
-      MARIADB_USER: ${DATABASE_USERNAME:-loud-ams}
-      MARIADB_PASSWORD: ${DATABASE_PASSWORD:-loud-ams}
-      MARIADB_AUTO_UPGRADE: "1"
-    command:
-      - "--character-set-server=utf8mb4"
-      - "--collation-server=utf8mb4_unicode_ci"
+      POSTGRES_DB: ${DATABASE_NAME:-loud}
+      POSTGRES_USER: ${DATABASE_USERNAME:-loud}
+      POSTGRES_PASSWORD: ${DATABASE_PASSWORD:-loud}
     security_opt:
       - no-new-privileges:true
     healthcheck:
-      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
+      test: ["CMD-SHELL", "pg_isready --username=$${POSTGRES_USER} --dbname=$${POSTGRES_DB}"]
       interval: 5s
       timeout: 5s
       retries: 10
       start_period: 30s
     volumes:
-      - ./Tests/DB:/var/lib/mysql
+      # postgres:18 keeps its data directory under /var/lib/postgresql/<major>/docker, so the whole
+      # /var/lib/postgresql tree is mounted — not the pre-18 /var/lib/postgresql/data path.
+      - ./Tests/DB:/var/lib/postgresql
diff --git a/Services/Website/docker-compose.yml b/Services/Website/docker-compose.yml
index 06c973c..17c03e1 100644
--- a/Services/Website/docker-compose.yml
+++ b/Services/Website/docker-compose.yml
@@ -20,13 +20,13 @@ services:
       LOG_LEVEL: ${LOG_LEVEL:-info}
       HTTP_SERVER_NAME: ${HTTP_SERVER_NAME:-LoudWebsite}
       SECURITY_STRICT_TRANSPORT_SECURITY: "${SECURITY_STRICT_TRANSPORT_SECURITY:-max-age=31536000; includeSubDomains}"
-      # Persistence: in-memory by default; set DATABASE_DRIVER=mysql to run against a managed MySQL/MariaDB database.
+      # Persistence: in-memory by default; set DATABASE_DRIVER=postgres to run against a managed PostgreSQL database.
       # Provide the password via the environment or a secret — never commit it.
-      DATABASE_DRIVER: ${DATABASE_DRIVER:-mysql}
+      DATABASE_DRIVER: ${DATABASE_DRIVER:-postgres}
       DATABASE_HOST: ${DATABASE_HOST:-localhost}
-      DATABASE_PORT: ${DATABASE_PORT:-3306}
-      DATABASE_NAME: ${DATABASE_NAME:-loud-ams}
-      DATABASE_USERNAME: ${DATABASE_USERNAME:-loud-ams}
+      DATABASE_PORT: ${DATABASE_PORT:-5432}
+      DATABASE_NAME: ${DATABASE_NAME:-loud}
+      DATABASE_USERNAME: ${DATABASE_USERNAME:-loud}
       DATABASE_PASSWORD: ${DATABASE_PASSWORD:-}
       DATABASE_TLS: ${DATABASE_TLS:-prefer}
     healthcheck: