diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppRepository.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppRepository.java
new file mode 100644
index 00000000..6e602dda
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppRepository.java
@@ -0,0 +1,13 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface AppRepository {
+    List<App> findByEnvironmentId(UUID environmentId);
+    Optional<App> findById(UUID id);
+    Optional<App> findByEnvironmentIdAndSlug(UUID environmentId, String slug);
+    UUID create(UUID environmentId, String slug, String displayName);
+    void delete(UUID id);
+}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppVersionRepository.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppVersionRepository.java
new file mode 100644
index 00000000..290f7a33
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppVersionRepository.java
@@ -0,0 +1,12 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface AppVersionRepository {
+    List<AppVersion> findByAppId(UUID appId);
+    Optional<AppVersion> findById(UUID id);
+    int findMaxVersion(UUID appId);
+    UUID create(UUID appId, int version, String jarPath, String jarChecksum, String jarFilename, Long jarSizeBytes);
+}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerRequest.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerRequest.java
new file mode 100644
index 00000000..4e8a6c0e
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerRequest.java
@@ -0,0 +1,15 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.Map;
+
+public record ContainerRequest(
+        String containerName,
+        String baseImage,
+        String jarPath,
+        String network,
+        Map<String, String> envVars,
+        Map<String, String> labels,
+        long memoryLimitBytes,
+        int cpuShares,
+        int healthCheckPort
+) {}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerStatus.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerStatus.java
new file mode 100644
index 00000000..eb7e7bec
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/ContainerStatus.java
@@ -0,0 +1,7 @@
+package com.cameleer3.server.core.runtime;
+
+public record ContainerStatus(String state, boolean running, int exitCode, String error) {
+    public static ContainerStatus notFound() {
+        return new ContainerStatus("not_found", false, -1, "Container not found");
+    }
+}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/DeploymentRepository.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/DeploymentRepository.java
new file mode 100644
index 00000000..af98584a
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/DeploymentRepository.java
@@ -0,0 +1,16 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface DeploymentRepository {
+    List<Deployment> findByAppId(UUID appId);
+    List<Deployment> findByEnvironmentId(UUID environmentId);
+    Optional<Deployment> findById(UUID id);
+    Optional<Deployment> findActiveByAppIdAndEnvironmentId(UUID appId, UUID environmentId);
+    UUID create(UUID appId, UUID appVersionId, UUID environmentId, String containerName);
+    void updateStatus(UUID id, DeploymentStatus status, String containerId, String errorMessage);
+    void markDeployed(UUID id);
+    void markStopped(UUID id);
+}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/EnvironmentRepository.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/EnvironmentRepository.java
new file mode 100644
index 00000000..07665b84
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/EnvironmentRepository.java
@@ -0,0 +1,15 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface EnvironmentRepository {
+    List<Environment> findAll();
+    Optional<Environment> findById(UUID id);
+    Optional<Environment> findBySlug(String slug);
+    UUID create(String slug, String displayName);
+    void updateDisplayName(UUID id, String displayName);
+    void updateStatus(UUID id, EnvironmentStatus status);
+    void delete(UUID id);
+}
diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/RuntimeOrchestrator.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/RuntimeOrchestrator.java
new file mode 100644
index 00000000..e9dc67c2
--- /dev/null
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/RuntimeOrchestrator.java
@@ -0,0 +1,12 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.stream.Stream;
+
+public interface RuntimeOrchestrator {
+    boolean isEnabled();
+    String startContainer(ContainerRequest request);
+    void stopContainer(String containerId);
+    void removeContainer(String containerId);
+    ContainerStatus getContainerStatus(String containerId);
+    Stream<String> getLogs(String containerId, int tailLines);
+}