diff --git a/libraries/libstratosphere/include/stratosphere/sf/impl/sf_impl_autogen_interface_macros.hpp b/libraries/libstratosphere/include/stratosphere/sf/impl/sf_impl_autogen_interface_macros.hpp
index 587e59cc2..0c53af706 100644
--- a/libraries/libstratosphere/include/stratosphere/sf/impl/sf_impl_autogen_interface_macros.hpp
+++ b/libraries/libstratosphere/include/stratosphere/sf/impl/sf_impl_autogen_interface_macros.hpp
@@ -122,9 +122,9 @@ namespace ams::sf::impl {
         template<typename T>                                                                 \
         concept Is##CLASSNAME = CMD_MACRO(CLASSNAME, AMS_SF_IMPL_CHECK_CONCEPT_HELPER) true;
 
-    #define AMS_SF_DEFINE_INTERFACE_IMPL(BASECLASS, CLASSNAME, CMD_MACRO)             \
-        AMS_SF_IMPL_DEFINE_INTERFACE(::ams::sf::IServiceObject, CLASSNAME, CMD_MACRO) \
-        AMS_SF_IMPL_DEFINE_CONCEPT(CLASSNAME, CMD_MACRO)                              \
+    #define AMS_SF_DEFINE_INTERFACE_IMPL(BASECLASS, CLASSNAME, CMD_MACRO) \
+        AMS_SF_IMPL_DEFINE_INTERFACE(BASECLASS, CLASSNAME, CMD_MACRO)     \
+        AMS_SF_IMPL_DEFINE_CONCEPT(CLASSNAME, CMD_MACRO)                  \
         static_assert(Is##CLASSNAME<CLASSNAME>);
 
     #define AMS_SF_METHOD_INFO_7(CLASSNAME, HANDLER, CMD_ID, RETURN, NAME, ARGS, ARGNAMES) \
diff --git a/stratosphere/sm/source/sm_debug_monitor_service.hpp b/stratosphere/sm/source/sm_debug_monitor_service.hpp
index 9b405e769..3efff18a2 100644
--- a/stratosphere/sm/source/sm_debug_monitor_service.hpp
+++ b/stratosphere/sm/source/sm_debug_monitor_service.hpp
@@ -20,7 +20,7 @@
 namespace ams::sm {
 
     /* Service definition. */
-    class DebugMonitorService final {
+    class DebugMonitorService {
         public:
             Result AtmosphereGetRecord(sf::Out<ServiceRecord> record, ServiceName service);
             void AtmosphereListRecords(const sf::OutArray<ServiceRecord> &records, sf::Out<u64> out_count, u64 offset);
diff --git a/stratosphere/sm/source/sm_main.cpp b/stratosphere/sm/source/sm_main.cpp
index 4afd2a2e1..e03ae38ee 100644
--- a/stratosphere/sm/source/sm_main.cpp
+++ b/stratosphere/sm/source/sm_main.cpp
@@ -25,7 +25,7 @@ extern "C" {
 
     u32 __nx_applet_type = AppletType_None;
 
-    #define INNER_HEAP_SIZE 0x4000
+    #define INNER_HEAP_SIZE 0x0
     size_t nx_inner_heap_size = INNER_HEAP_SIZE;
     char   nx_inner_heap[INNER_HEAP_SIZE];
 
@@ -83,9 +83,37 @@ void __appExit(void) {
 
 namespace {
 
-    /* sm:m, sm:, sm:dmnt. */
-    constexpr size_t NumServers  = 3;
-    sf::hipc::ServerManager<NumServers> g_server_manager;
+    enum PortIndex {
+        PortIndex_User,
+        PortIndex_Manager,
+        PortIndex_DebugMonitor,
+        PortIndex_Count,
+    };
+
+    class ServerManager final : public sf::hipc::ServerManager<PortIndex_Count> {
+        private:
+            virtual ams::Result OnNeedsToAccept(int port_index, Server *server) override;
+    };
+
+    using Allocator     = sf::ExpHeapAllocator;
+    using ObjectFactory = sf::ObjectFactory<sf::ExpHeapAllocator::Policy>;
+
+    alignas(0x40) constinit u8 g_server_allocator_buffer[8_KB];
+    Allocator g_server_allocator;
+
+    ServerManager g_server_manager;
+
+    ams::Result ServerManager::OnNeedsToAccept(int port_index, Server *server) {
+        switch (port_index) {
+            case PortIndex_User:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<sm::impl::IUserInterface, sm::UserService>(std::addressof(g_server_allocator)));
+            case PortIndex_Manager:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<sm::impl::IManagerInterface, sm::ManagerService>(std::addressof(g_server_allocator)));
+            case PortIndex_DebugMonitor:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<sm::impl::IDebugMonitorInterface, sm::DebugMonitorService>(std::addressof(g_server_allocator)));
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
 
     ams::Result ResumeImpl(os::WaitableHolderType *session_holder) {
         return g_server_manager.Process(session_holder);
@@ -93,24 +121,35 @@ namespace {
 
 }
 
+void *operator new(size_t size) {
+    AMS_ABORT("operator new(size_t) was called");
+}
+
+void operator delete(void *p) {
+    AMS_ABORT("operator delete(void *) was called");
+}
+
 int main(int argc, char **argv)
 {
     /* Set thread name. */
     os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(sm, Main));
     AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(sm, Main));
 
+    /* Setup server allocator. */
+    g_server_allocator.Attach(lmem::CreateExpHeap(g_server_allocator_buffer, sizeof(g_server_allocator_buffer), lmem::CreateOption_None));
+
     /* Create sm:, (and thus allow things to register to it). */
     {
         Handle sm_h;
         R_ABORT_UNLESS(svc::ManageNamedPort(&sm_h, "sm:", 0x40));
-        g_server_manager.RegisterServer<sm::impl::IUserInterface, sm::UserService>(sm_h);
+        g_server_manager.RegisterServer(PortIndex_User, sm_h);
     }
 
     /* Create sm:m manually. */
     {
         Handle smm_h;
         R_ABORT_UNLESS(sm::impl::RegisterServiceForSelf(&smm_h, sm::ServiceName::Encode("sm:m"), 1));
-        g_server_manager.RegisterServer<sm::impl::IManagerInterface, sm::ManagerService>(smm_h);
+        g_server_manager.RegisterServer(PortIndex_Manager, smm_h);
         sm::impl::TestAndResume(ResumeImpl);
     }
 
@@ -119,7 +158,7 @@ int main(int argc, char **argv)
     {
         Handle smdmnt_h;
         R_ABORT_UNLESS(sm::impl::RegisterServiceForSelf(&smdmnt_h, sm::ServiceName::Encode("sm:dmnt"), 1));
-        g_server_manager.RegisterServer<sm::impl::IDebugMonitorInterface, sm::DebugMonitorService>(smdmnt_h);
+        g_server_manager.RegisterServer(PortIndex_DebugMonitor, smdmnt_h);
         sm::impl::TestAndResume(ResumeImpl);
     }
 
diff --git a/stratosphere/sm/source/sm_manager_service.hpp b/stratosphere/sm/source/sm_manager_service.hpp
index 1906c1824..db400ddd9 100644
--- a/stratosphere/sm/source/sm_manager_service.hpp
+++ b/stratosphere/sm/source/sm_manager_service.hpp
@@ -19,7 +19,7 @@
 namespace ams::sm {
 
     /* Service definition. */
-    class ManagerService final {
+    class ManagerService {
         public:
             Result RegisterProcess(os::ProcessId process_id, const sf::InBuffer &acid_sac, const sf::InBuffer &aci_sac);
             Result UnregisterProcess(os::ProcessId process_id);
diff --git a/stratosphere/sm/source/sm_user_service.hpp b/stratosphere/sm/source/sm_user_service.hpp
index 8dd22d6b8..544a7ca11 100644
--- a/stratosphere/sm/source/sm_user_service.hpp
+++ b/stratosphere/sm/source/sm_user_service.hpp
@@ -20,7 +20,7 @@
 namespace ams::sm {
 
     /* Service definition. */
-    class UserService final {
+    class UserService {
         private:
             os::ProcessId process_id = os::InvalidProcessId;
             bool has_initialized = false;
diff --git a/stratosphere/spl/source/spl_deprecated_service.hpp b/stratosphere/spl/source/spl_deprecated_service.hpp
index b7c03291b..96b2f5c53 100644
--- a/stratosphere/spl/source/spl_deprecated_service.hpp
+++ b/stratosphere/spl/source/spl_deprecated_service.hpp
@@ -18,7 +18,7 @@
 
 namespace ams::spl {
 
-    class DeprecatedService final {
+    class DeprecatedService {
         public:
             virtual ~DeprecatedService();
         public:
diff --git a/stratosphere/spl/source/spl_main.cpp b/stratosphere/spl/source/spl_main.cpp
index bcf7c7179..40275d122 100644
--- a/stratosphere/spl/source/spl_main.cpp
+++ b/stratosphere/spl/source/spl_main.cpp
@@ -31,7 +31,7 @@ extern "C" {
 
     u32 __nx_applet_type = AppletType_None;
 
-    #define INNER_HEAP_SIZE 0x2000
+    #define INNER_HEAP_SIZE 0x0
     size_t nx_inner_heap_size = INNER_HEAP_SIZE;
     char   nx_inner_heap[INNER_HEAP_SIZE];
 
@@ -95,13 +95,22 @@ namespace {
         static constexpr size_t MaxDomainObjects = 0;
     };
 
+    enum PortIndex {
+        PortIndex_General,
+        PortIndex_Random,
+        PortIndex_Crypto,
+        PortIndex_Fs,
+        PortIndex_Ssl,
+        PortIndex_Es,
+        PortIndex_Manu,
+        PortIndex_Count,
+    };
+
     constexpr sm::ServiceName RandomServiceName = sm::ServiceName::Encode("csrng");
     constexpr size_t          RandomMaxSessions = 3;
 
-    constexpr sm::ServiceName DeprecatedServiceName = sm::ServiceName::Encode("spl:");
-    constexpr size_t          DeprecatedMaxSessions = 13;
-
     constexpr sm::ServiceName GeneralServiceName = sm::ServiceName::Encode("spl:");
+    constexpr size_t          DeprecatedMaxSessions = 13;
     constexpr size_t          GeneralMaxSessions = 7;
 
     constexpr sm::ServiceName CryptoServiceName = sm::ServiceName::Encode("spl:mig");
@@ -121,11 +130,64 @@ namespace {
 
     /* csrng, spl:, spl:mig, spl:ssl, spl:es, spl:fs, spl:manu. */
     /* TODO: Consider max sessions enforcement? */
-    constexpr size_t NumServers  = 7;
     constexpr size_t ModernMaxSessions = GeneralMaxSessions + CryptoMaxSessions + SslMaxSessions + EsMaxSessions + FsMaxSessions + ManuMaxSessions;
     constexpr size_t NumSessions = RandomMaxSessions + std::max(DeprecatedMaxSessions, ModernMaxSessions) + 1;
-    sf::hipc::ServerManager<NumServers, SplServerOptions, NumSessions> g_server_manager;
 
+    class ServerManager final : public sf::hipc::ServerManager<PortIndex_Count, SplServerOptions, NumSessions> {
+        private:
+            sf::ExpHeapAllocator *m_allocator;
+            spl::GeneralService m_general_service;
+            sf::UnmanagedServiceObjectByPointer<spl::impl::IGeneralInterface, spl::GeneralService> m_general_service_object;
+            spl::RandomService m_random_service;
+            sf::UnmanagedServiceObjectByPointer<spl::impl::IRandomInterface, spl::RandomService> m_random_service_object;
+        public:
+            ServerManager(sf::ExpHeapAllocator *allocator) : m_allocator(allocator), m_general_service(), m_general_service_object(std::addressof(m_general_service)), m_random_service(), m_random_service_object(std::addressof(m_random_service)) {
+                /* ... */
+            }
+        private:
+            virtual ams::Result OnNeedsToAccept(int port_index, Server *server) override;
+    };
+
+    using Allocator     = sf::ExpHeapAllocator;
+    using ObjectFactory = sf::ObjectFactory<sf::ExpHeapAllocator::Policy>;
+
+    alignas(0x40) constinit u8 g_server_allocator_buffer[8_KB];
+    Allocator g_server_allocator;
+
+    ServerManager g_server_manager(std::addressof(g_server_allocator));
+
+    ams::Result ServerManager::OnNeedsToAccept(int port_index, Server *server) {
+        switch (port_index) {
+            case PortIndex_General:
+                if (hos::GetVersion() >= hos::Version_4_0_0) {
+                    return this->AcceptImpl(server, m_general_service_object.GetShared());
+                } else {
+                    return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::IDeprecatedGeneralInterface, spl::DeprecatedService>(m_allocator));
+                }
+            case PortIndex_Random:
+                return this->AcceptImpl(server, m_random_service_object.GetShared());
+            case PortIndex_Crypto:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::ICryptoInterface, spl::CryptoService>(m_allocator));
+            case PortIndex_Fs:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::IFsInterface,     spl::FsService>(m_allocator));
+            case PortIndex_Ssl:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::ISslInterface,    spl::SslService>(m_allocator));
+            case PortIndex_Es:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::IEsInterface,     spl::EsService>(m_allocator));
+            case PortIndex_Manu:
+                return this->AcceptImpl(server, ObjectFactory::CreateSharedEmplaced<spl::impl::IManuInterface,   spl::ManuService>(m_allocator));
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+}
+
+void *operator new(size_t size) {
+    AMS_ABORT("operator new(size_t) was called");
+}
+
+void operator delete(void *p) {
+    AMS_ABORT("operator delete(void *) was called");
 }
 
 int main(int argc, char **argv)
@@ -134,22 +196,24 @@ int main(int argc, char **argv)
     os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(spl, Main));
     AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(spl, Main));
 
+    /* Setup server allocator. */
+    g_server_allocator.Attach(lmem::CreateExpHeap(g_server_allocator_buffer, sizeof(g_server_allocator_buffer), lmem::CreateOption_None));
+
     /* Initialize global context. */
     spl::impl::Initialize();
 
     /* Create services. */
-    R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IRandomInterface, spl::RandomService>(RandomServiceName, RandomMaxSessions)));
-    if (hos::GetVersion() >= hos::Version_4_0_0) {
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IGeneralInterface, spl::GeneralService>(GeneralServiceName, GeneralMaxSessions)));
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::ICryptoInterface,  spl::CryptoService>(CryptoServiceName, CryptoMaxSessions)));
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::ISslInterface,     spl::SslService>(SslServiceName, SslMaxSessions)));
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IEsInterface,      spl::EsService>(EsServiceName, EsMaxSessions)));
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IFsInterface,      spl::FsService>(FsServiceName, FsMaxSessions)));
-        if (hos::GetVersion() >= hos::Version_5_0_0) {
-            R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IManuInterface, spl::ManuService>(ManuServiceName, ManuMaxSessions)));
+    const auto fw_ver = hos::GetVersion();
+    R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_General, GeneralServiceName, fw_ver >= hos::Version_4_0_0 ? GeneralMaxSessions : DeprecatedMaxSessions));
+    R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Random, RandomServiceName, RandomMaxSessions));
+    if (fw_ver >= hos::Version_4_0_0) {
+        R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Crypto, CryptoServiceName, CryptoMaxSessions));
+        R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Fs,     FsServiceName,     FsMaxSessions));
+        R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Ssl,    SslServiceName,    SslMaxSessions));
+        R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Es,     EsServiceName,     EsMaxSessions));
+        if (fw_ver >= hos::Version_5_0_0) {
+            g_server_manager.RegisterServer(PortIndex_Manu, ManuServiceName, ManuMaxSessions);
         }
-    } else {
-        R_ABORT_UNLESS((g_server_manager.RegisterServer<spl::impl::IDeprecatedGeneralInterface, spl::DeprecatedService>(DeprecatedServiceName, DeprecatedMaxSessions)));
     }
 
     /* Loop forever, servicing our services. */