diff --git a/ntex-util/CHANGES.md b/ntex-util/CHANGES.md
index bf9f9303..6d1256bf 100644
--- a/ntex-util/CHANGES.md
+++ b/ntex-util/CHANGES.md
@@ -1,5 +1,9 @@
 # Changes
 
+## [1.0.0] - 2024-01-0x
+
+* Use "async fn" in trait for Service definition
+
 ## [0.3.4] - 2023-11-06
 
 * Add UnwindSafe trait on mpsc::Receiver<T> #239
diff --git a/ntex-util/Cargo.toml b/ntex-util/Cargo.toml
index 45c84322..c49e645d 100644
--- a/ntex-util/Cargo.toml
+++ b/ntex-util/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ntex-util"
-version = "0.3.4"
+version = "1.0.0"
 authors = ["ntex contributors <team@ntex.rs>"]
 description = "Utilities for ntex framework"
 keywords = ["network", "framework", "async", "futures"]
@@ -17,7 +17,7 @@ path = "src/lib.rs"
 
 [dependencies]
 ntex-rt = "0.4.7"
-ntex-service = "1.2.6"
+ntex-service = "2.0.0"
 bitflags = "2.4"
 fxhash = "0.2.1"
 log = "0.4"
@@ -29,6 +29,6 @@ pin-project-lite = "0.2.9"
 
 [dev-dependencies]
 ntex = { version = "0.7", features = ["tokio"] }
-ntex-bytes = "0.1.18"
+ntex-bytes = "0.1.21"
 ntex-macros = "0.1.3"
 futures-util = { version = "0.3", default-features = false, features = ["alloc"] }
diff --git a/ntex-util/src/channel/condition.rs b/ntex-util/src/channel/condition.rs
index 2e329734..45aa8b0f 100644
--- a/ntex-util/src/channel/condition.rs
+++ b/ntex-util/src/channel/condition.rs
@@ -1,8 +1,8 @@
 use slab::Slab;
-use std::{future::Future, pin::Pin, task::Context, task::Poll};
+use std::{future::poll_fn, future::Future, pin::Pin, task::Context, task::Poll};
 
 use super::cell::Cell;
-use crate::{future::poll_fn, task::LocalWaker};
+use crate::task::LocalWaker;
 
 /// Condition allows to notify multiple waiters at the same time
 #[derive(Clone, Debug)]
diff --git a/ntex-util/src/channel/mpsc.rs b/ntex-util/src/channel/mpsc.rs
index 3962ac49..e4b16b3e 100644
--- a/ntex-util/src/channel/mpsc.rs
+++ b/ntex-util/src/channel/mpsc.rs
@@ -1,13 +1,13 @@
 //! A multi-producer, single-consumer, futures-aware, FIFO queue.
-use std::{
-    collections::VecDeque, fmt, panic::UnwindSafe, pin::Pin, task::Context, task::Poll,
-};
+use std::collections::VecDeque;
+use std::future::poll_fn;
+use std::{fmt, panic::UnwindSafe, pin::Pin, task::Context, task::Poll};
 
 use futures_core::{FusedStream, Stream};
 use futures_sink::Sink;
 
 use super::cell::{Cell, WeakCell};
-use crate::{future::poll_fn, task::LocalWaker};
+use crate::task::LocalWaker;
 
 /// Creates a unbounded in-memory channel with buffered storage.
 pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
diff --git a/ntex-util/src/channel/oneshot.rs b/ntex-util/src/channel/oneshot.rs
index 84771a5a..61cbd01e 100644
--- a/ntex-util/src/channel/oneshot.rs
+++ b/ntex-util/src/channel/oneshot.rs
@@ -1,8 +1,8 @@
 //! A one-shot, futures-aware channel.
-use std::{future::Future, pin::Pin, task::Context, task::Poll};
+use std::{future::poll_fn, future::Future, pin::Pin, task::Context, task::Poll};
 
 use super::{cell::Cell, Canceled};
-use crate::{future::poll_fn, task::LocalWaker};
+use crate::task::LocalWaker;
 
 /// Creates a new futures-aware, one-shot channel.
 pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
diff --git a/ntex-util/src/future/mod.rs b/ntex-util/src/future/mod.rs
index 1049e5ce..6620dbd7 100644
--- a/ntex-util/src/future/mod.rs
+++ b/ntex-util/src/future/mod.rs
@@ -1,5 +1,5 @@
 //! Utilities for futures
-use std::{future::Future, mem, pin::Pin, task::Context, task::Poll};
+use std::{future::poll_fn, future::Future, mem, pin::Pin, task::Context, task::Poll};
 
 pub use futures_core::{Stream, TryFuture};
 pub use futures_sink::Sink;
@@ -20,35 +20,6 @@ pub use self::select::select;
 /// you can't statically type your result or need to add some indirection.
 pub type BoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + 'a>>;
 
-/// Creates a new future wrapping around a function returning [`Poll`].
-///
-/// Polling the returned future delegates to the wrapped function.
-pub fn poll_fn<T, F>(f: F) -> impl Future<Output = T>
-where
-    F: FnMut(&mut Context<'_>) -> Poll<T>,
-{
-    PollFn { f }
-}
-
-/// Future for the [`poll_fn`] function.
-#[must_use = "futures do nothing unless you `.await` or poll them"]
-struct PollFn<F> {
-    f: F,
-}
-
-impl<F> Unpin for PollFn<F> {}
-
-impl<T, F> Future for PollFn<F>
-where
-    F: FnMut(&mut Context<'_>) -> Poll<T>,
-{
-    type Output = T;
-
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T> {
-        (self.f)(cx)
-    }
-}
-
 /// Creates a future that resolves to the next item in the stream.
 pub async fn stream_recv<S>(stream: &mut S) -> Option<S::Item>
 where
diff --git a/ntex-util/src/services/buffer.rs b/ntex-util/src/services/buffer.rs
index 571d26b8..6c91c956 100644
--- a/ntex-util/src/services/buffer.rs
+++ b/ntex-util/src/services/buffer.rs
@@ -1,11 +1,11 @@
 //! Service that buffers incomming requests.
 use std::cell::{Cell, RefCell};
 use std::task::{ready, Context, Poll};
-use std::{collections::VecDeque, fmt, future::Future, marker::PhantomData, pin::Pin};
+use std::{collections::VecDeque, fmt, marker::PhantomData};
 
-use ntex_service::{IntoService, Middleware, Service, ServiceCallToCall, ServiceCtx};
+use ntex_service::{IntoService, Middleware, Service, ServiceCtx};
 
-use crate::channel::{oneshot, Canceled};
+use crate::channel::oneshot;
 
 /// Buffer - service factory for service that can buffer incoming request.
 ///
@@ -79,6 +79,31 @@ where
     }
 }
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum BufferServiceError<E> {
+    Service(E),
+    RequestCanceled,
+}
+
+impl<E> From<E> for BufferServiceError<E> {
+    fn from(err: E) -> Self {
+        BufferServiceError::Service(err)
+    }
+}
+
+impl<E: std::fmt::Display> std::fmt::Display for BufferServiceError<E> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            BufferServiceError::Service(e) => std::fmt::Display::fmt(e, f),
+            BufferServiceError::RequestCanceled => {
+                f.write_str("buffer service request canceled")
+            }
+        }
+    }
+}
+
+impl<E: std::fmt::Display + std::fmt::Debug> std::error::Error for BufferServiceError<E> {}
+
 /// Buffer service - service that can buffer incoming requests.
 ///
 /// Default number of buffered requests is 16
@@ -158,7 +183,6 @@ where
 {
     type Response = S::Response;
     type Error = BufferServiceError<S::Error>;
-    type Future<'f> = BufferServiceResponse<'f, R, S> where Self: 'f, R: 'f;
 
     #[inline]
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
@@ -196,30 +220,6 @@ where
         Poll::Ready(Ok(()))
     }
 
-    #[inline]
-    fn call<'a>(&'a self, req: R, ctx: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-        if self.ready.get() {
-            self.ready.set(false);
-            BufferServiceResponse {
-                slf: self,
-                state: ResponseState::Running {
-                    fut: ctx.call_nowait(&self.service, req),
-                },
-            }
-        } else {
-            let (tx, rx) = oneshot::channel();
-            self.buf.borrow_mut().push_back(tx);
-
-            BufferServiceResponse {
-                slf: self,
-                state: ResponseState::WaitingForRelease {
-                    rx,
-                    call: Some(ctx.call(&self.service, req).advance_to_call()),
-                },
-            }
-        }
-    }
-
     fn poll_shutdown(&self, cx: &mut std::task::Context<'_>) -> Poll<()> {
         let mut buffer = self.buf.borrow_mut();
         if self.cancel_on_shutdown {
@@ -257,97 +257,41 @@ where
 
         self.service.poll_shutdown(cx)
     }
-}
 
-pin_project_lite::pin_project! {
-    #[doc(hidden)]
-    #[must_use = "futures do nothing unless polled"]
-    pub struct BufferServiceResponse<'f, R, S: Service<R>>
-    {
-        #[pin]
-        state: ResponseState<'f, R, S>,
-        slf: &'f BufferService<R, S>,
-    }
-}
+    async fn call(
+        &self,
+        req: R,
+        ctx: ServiceCtx<'_, Self>,
+    ) -> Result<Self::Response, Self::Error> {
+        if self.ready.get() {
+            self.ready.set(false);
+            Ok(ctx.call_nowait(&self.service, req).await?)
+        } else {
+            let (tx, rx) = oneshot::channel();
+            self.buf.borrow_mut().push_back(tx);
 
-pin_project_lite::pin_project! {
-    #[project = ResponseStateProject]
-    enum ResponseState<'f, R, S: Service<R>>
-    {
-        WaitingForRelease { rx: oneshot::Receiver<oneshot::Sender<()>>, call: Option<ServiceCallToCall<'f, S, R>> },
-        WaitingForReady { tx: oneshot::Sender<()>, #[pin] call: ServiceCallToCall<'f, S, R> },
-        Running { #[pin] fut: S::Future<'f> },
-    }
-}
+            // release
+            let _task_guard = rx.recv().await.map_err(|_| {
+                log::trace!("Buffered service request canceled");
+                BufferServiceError::RequestCanceled
+            })?;
 
-impl<'f, R, S> Future for BufferServiceResponse<'f, R, S>
-where
-    S: Service<R>,
-{
-    type Output = Result<S::Response, BufferServiceError<S::Error>>;
+            // check service readiness
+            ctx.ready(&self.service).await?;
 
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let mut this = self.as_mut().project();
-        match this.state.as_mut().project() {
-            ResponseStateProject::WaitingForRelease { rx, call } => {
-                match ready!(rx.poll_recv(cx)) {
-                    Ok(tx) => {
-                        let call = call.take().expect("always set in this state");
-                        this.state.set(ResponseState::WaitingForReady { tx, call });
-                        self.poll(cx)
-                    }
-                    Err(Canceled) => {
-                        log::trace!("Buffered service request canceled");
-                        Poll::Ready(Err(BufferServiceError::RequestCanceled))
-                    }
-                }
-            }
-            ResponseStateProject::WaitingForReady { call, .. } => {
-                let fut = match ready!(call.poll(cx)) {
-                    Ok(fut) => fut,
-                    Err(err) => return Poll::Ready(Err(err.into())),
-                };
-
-                this.state.set(ResponseState::Running { fut });
-                self.poll(cx)
-            }
-            ResponseStateProject::Running { fut } => fut.poll(cx).map_err(|e| e.into()),
+            // call service
+            Ok(ctx.call_nowait(&self.service, req).await?)
         }
     }
 }
 
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum BufferServiceError<E> {
-    Service(E),
-    RequestCanceled,
-}
-
-impl<E> From<E> for BufferServiceError<E> {
-    fn from(err: E) -> Self {
-        BufferServiceError::Service(err)
-    }
-}
-
-impl<E: std::fmt::Display> std::fmt::Display for BufferServiceError<E> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            BufferServiceError::Service(e) => std::fmt::Display::fmt(e, f),
-            BufferServiceError::RequestCanceled => {
-                f.write_str("buffer service request canceled")
-            }
-        }
-    }
-}
-
-impl<E: std::fmt::Display + std::fmt::Debug> std::error::Error for BufferServiceError<E> {}
-
 #[cfg(test)]
 mod tests {
     use ntex_service::{apply, fn_factory, Pipeline, Service, ServiceFactory};
     use std::{rc::Rc, task::Context, task::Poll, time::Duration};
 
     use super::*;
-    use crate::future::{lazy, Ready};
+    use crate::future::lazy;
     use crate::task::LocalWaker;
 
     #[derive(Clone)]
@@ -362,7 +306,6 @@ mod tests {
     impl Service<()> for TestService {
         type Response = ();
         type Error = ();
-        type Future<'f> = Ready<(), ()> where Self: 'f;
 
         fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
             self.0.waker.register(cx.waker());
@@ -373,10 +316,10 @@ mod tests {
             }
         }
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
+        async fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Result<(), ()> {
             self.0.ready.set(false);
             self.0.count.set(self.0.count.get() + 1);
-            Ready::Ok(())
+            Ok(())
         }
     }
 
diff --git a/ntex-util/src/services/inflight.rs b/ntex-util/src/services/inflight.rs
index 8fc6754c..08fe2087 100644
--- a/ntex-util/src/services/inflight.rs
+++ b/ntex-util/src/services/inflight.rs
@@ -1,9 +1,9 @@
 //! Service that limits number of in-flight async requests.
-use std::{future::Future, marker::PhantomData, pin::Pin, task::Context, task::Poll};
+use std::{task::Context, task::Poll};
 
-use ntex_service::{IntoService, Middleware, Service, ServiceCall, ServiceCtx};
+use ntex_service::{IntoService, Middleware, Service, ServiceCtx};
 
-use super::counter::{Counter, CounterGuard};
+use super::counter::Counter;
 
 /// InFlight - service factory for service that can limit number of in-flight
 /// async requests.
@@ -62,7 +62,6 @@ where
 {
     type Response = T::Response;
     type Error = T::Error;
-    type Future<'f> = InFlightServiceResponse<'f, T, R> where Self: 'f, R: 'f;
 
     #[inline]
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
@@ -77,57 +76,35 @@ where
     }
 
     #[inline]
-    fn call<'a>(&'a self, req: R, ctx: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-        InFlightServiceResponse {
-            fut: ctx.call(&self.service, req),
-            _guard: self.count.get(),
-            _t: PhantomData,
-        }
+    async fn call(
+        &self,
+        req: R,
+        ctx: ServiceCtx<'_, Self>,
+    ) -> Result<Self::Response, Self::Error> {
+        let _guard = self.count.get();
+        ctx.call(&self.service, req).await
     }
 
     ntex_service::forward_poll_shutdown!(service);
 }
 
-pin_project_lite::pin_project! {
-    #[doc(hidden)]
-    pub struct InFlightServiceResponse<'f, T: Service<R>, R>
-    where T: 'f, R: 'f
-    {
-        #[pin]
-        fut: ServiceCall<'f, T, R>,
-        _guard: CounterGuard,
-        _t: PhantomData<R>
-    }
-}
-
-impl<'f, T: Service<R>, R> Future for InFlightServiceResponse<'f, T, R> {
-    type Output = Result<T::Response, T::Error>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        self.project().fut.poll(cx)
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use ntex_service::{apply, fn_factory, Pipeline, Service, ServiceCtx, ServiceFactory};
     use std::{cell::RefCell, task::Poll, time::Duration};
 
     use super::*;
-    use crate::{channel::oneshot, future::lazy, future::BoxFuture};
+    use crate::{channel::oneshot, future::lazy};
 
     struct SleepService(oneshot::Receiver<()>);
 
     impl Service<()> for SleepService {
         type Response = ();
         type Error = ();
-        type Future<'f> = BoxFuture<'f, Result<(), ()>>;
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-            Box::pin(async move {
-                let _ = self.0.recv().await;
-                Ok::<_, ()>(())
-            })
+        async fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Result<(), ()> {
+            let _ = self.0.recv().await;
+            Ok(())
         }
     }
 
diff --git a/ntex-util/src/services/keepalive.rs b/ntex-util/src/services/keepalive.rs
index 87507e0b..109129c2 100644
--- a/ntex-util/src/services/keepalive.rs
+++ b/ntex-util/src/services/keepalive.rs
@@ -3,7 +3,6 @@ use std::{cell::Cell, convert::Infallible, fmt, marker, time::Duration, time::In
 
 use ntex_service::{Service, ServiceCtx, ServiceFactory};
 
-use crate::future::Ready;
 use crate::time::{now, sleep, Millis, Sleep};
 
 /// KeepAlive service factory
@@ -60,13 +59,13 @@ where
 {
     type Response = R;
     type Error = E;
-    type InitError = Infallible;
+
     type Service = KeepAliveService<R, E, F>;
-    type Future<'f> = Ready<Self::Service, Self::InitError> where Self: 'f, C: 'f;
+    type InitError = Infallible;
 
     #[inline]
-    fn create(&self, _: C) -> Self::Future<'_> {
-        Ready::Ok(KeepAliveService::new(self.ka, self.f.clone()))
+    async fn create(&self, _: C) -> Result<Self::Service, Self::InitError> {
+        Ok(KeepAliveService::new(self.ka, self.f.clone()))
     }
 }
 
@@ -111,7 +110,6 @@ where
 {
     type Response = R;
     type Error = E;
-    type Future<'f> = Ready<R, E> where Self: 'f, R: 'f;
 
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         match self.sleep.poll_elapsed(cx) {
@@ -132,9 +130,9 @@ where
         }
     }
 
-    fn call<'a>(&'a self, req: R, _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
+    async fn call(&self, req: R, _: ServiceCtx<'_, Self>) -> Result<R, E> {
         self.expire.set(now());
-        Ready::Ok(req)
+        Ok(req)
     }
 }
 
diff --git a/ntex-util/src/services/onerequest.rs b/ntex-util/src/services/onerequest.rs
index 5d78f848..11b1faf7 100644
--- a/ntex-util/src/services/onerequest.rs
+++ b/ntex-util/src/services/onerequest.rs
@@ -1,7 +1,7 @@
 //! Service that limits number of in-flight async requests to 1.
-use std::{cell::Cell, future::Future, pin::Pin, task::Context, task::Poll};
+use std::{cell::Cell, task::Context, task::Poll};
 
-use ntex_service::{IntoService, Middleware, Service, ServiceCall, ServiceCtx};
+use ntex_service::{IntoService, Middleware, Service, ServiceCtx};
 
 use crate::task::LocalWaker;
 
@@ -49,7 +49,6 @@ where
 {
     type Response = T::Response;
     type Error = T::Error;
-    type Future<'f> = OneRequestServiceResponse<'f, T, R> where Self: 'f, R: 'f;
 
     #[inline]
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
@@ -64,62 +63,39 @@ where
     }
 
     #[inline]
-    fn call<'a>(&'a self, req: R, ctx: ServiceCtx<'a, Self>) -> Self::Future<'a> {
+    async fn call(
+        &self,
+        req: R,
+        ctx: ServiceCtx<'_, Self>,
+    ) -> Result<Self::Response, Self::Error> {
         self.ready.set(false);
 
-        OneRequestServiceResponse {
-            fut: ctx.call(&self.service, req),
-            service: self,
-        }
+        let result = ctx.call(&self.service, req).await;
+        self.ready.set(true);
+        self.waker.wake();
+        result
     }
 
     ntex_service::forward_poll_shutdown!(service);
 }
 
-pin_project_lite::pin_project! {
-    #[doc(hidden)]
-    pub struct OneRequestServiceResponse<'f, T: Service<R>, R>
-    where T: 'f, R: 'f
-    {
-        #[pin]
-        fut: ServiceCall<'f, T, R>,
-        service: &'f OneRequestService<T>,
-    }
-}
-
-impl<'f, T: Service<R>, R> Future for OneRequestServiceResponse<'f, T, R> {
-    type Output = Result<T::Response, T::Error>;
-
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let result = self.as_mut().project().fut.poll(cx);
-        if result.is_ready() {
-            self.service.ready.set(true);
-            self.service.waker.wake();
-        }
-        result
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use ntex_service::{apply, fn_factory, Pipeline, Service, ServiceCtx, ServiceFactory};
     use std::{cell::RefCell, task::Poll, time::Duration};
 
     use super::*;
-    use crate::{channel::oneshot, future::lazy, future::BoxFuture};
+    use crate::{channel::oneshot, future::lazy};
 
     struct SleepService(oneshot::Receiver<()>);
 
     impl Service<()> for SleepService {
         type Response = ();
         type Error = ();
-        type Future<'f> = BoxFuture<'f, Result<(), ()>>;
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-            Box::pin(async move {
-                let _ = self.0.recv().await;
-                Ok::<_, ()>(())
-            })
+        async fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Result<(), ()> {
+            let _ = self.0.recv().await;
+            Ok::<_, ()>(())
         }
     }
 
diff --git a/ntex-util/src/services/timeout.rs b/ntex-util/src/services/timeout.rs
index 79dcc546..63768a8a 100644
--- a/ntex-util/src/services/timeout.rs
+++ b/ntex-util/src/services/timeout.rs
@@ -2,12 +2,12 @@
 //!
 //! If the response does not complete within the specified timeout, the response
 //! will be aborted.
-use std::{fmt, future::Future, marker, pin::Pin, task::Context, task::Poll};
+use std::{fmt, marker};
 
-use ntex_service::{IntoService, Middleware, Service, ServiceCall, ServiceCtx};
+use ntex_service::{IntoService, Middleware, Service, ServiceCtx};
 
-use crate::future::Either;
-use crate::time::{sleep, Millis, Sleep};
+use crate::future::{select, Either};
+use crate::time::{sleep, Millis};
 
 /// Applies a timeout to requests.
 ///
@@ -123,20 +123,21 @@ where
 {
     type Response = S::Response;
     type Error = TimeoutError<S::Error>;
-    type Future<'f> = Either<TimeoutServiceResponse<'f, S, R>, TimeoutServiceResponse2<'f, S, R>> where Self: 'f, R: 'f;
 
-    fn call<'a>(&'a self, request: R, ctx: ServiceCtx<'a, Self>) -> Self::Future<'a> {
+    async fn call(
+        &self,
+        request: R,
+        ctx: ServiceCtx<'_, Self>,
+    ) -> Result<Self::Response, Self::Error> {
         if self.timeout.is_zero() {
-            Either::Right(TimeoutServiceResponse2 {
-                fut: ctx.call(&self.service, request),
-                _t: marker::PhantomData,
-            })
+            ctx.call(&self.service, request)
+                .await
+                .map_err(TimeoutError::Service)
         } else {
-            Either::Left(TimeoutServiceResponse {
-                fut: ctx.call(&self.service, request),
-                sleep: sleep(self.timeout),
-                _t: marker::PhantomData,
-            })
+            match select(sleep(self.timeout), ctx.call(&self.service, request)).await {
+                Either::Left(_) => Err(TimeoutError::Timeout),
+                Either::Right(res) => res.map_err(TimeoutError::Service),
+            }
         }
     }
 
@@ -144,72 +145,6 @@ where
     ntex_service::forward_poll_shutdown!(service);
 }
 
-pin_project_lite::pin_project! {
-    /// `TimeoutService` response future
-    #[doc(hidden)]
-    #[must_use = "futures do nothing unless polled"]
-    pub struct TimeoutServiceResponse<'f, T: Service<R>, R>
-    where T: 'f, R: 'f,
-    {
-        #[pin]
-        fut: ServiceCall<'f, T, R>,
-        sleep: Sleep,
-        _t: marker::PhantomData<R>
-    }
-}
-
-impl<'f, T, R> Future for TimeoutServiceResponse<'f, T, R>
-where
-    T: Service<R>,
-{
-    type Output = Result<T::Response, TimeoutError<T::Error>>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.project();
-
-        // First, try polling the future
-        match this.fut.poll(cx) {
-            Poll::Ready(Ok(v)) => return Poll::Ready(Ok(v)),
-            Poll::Ready(Err(e)) => return Poll::Ready(Err(TimeoutError::Service(e))),
-            Poll::Pending => {}
-        }
-
-        // Now check the sleep
-        match this.sleep.poll_elapsed(cx) {
-            Poll::Pending => Poll::Pending,
-            Poll::Ready(_) => Poll::Ready(Err(TimeoutError::Timeout)),
-        }
-    }
-}
-
-pin_project_lite::pin_project! {
-    /// `TimeoutService` response future
-    #[doc(hidden)]
-    #[must_use = "futures do nothing unless polled"]
-    pub struct TimeoutServiceResponse2<'f, T: Service<R>, R>
-    where T: 'f, R: 'f,
-    {
-        #[pin]
-        fut: ServiceCall<'f, T, R>,
-        _t: marker::PhantomData<R>,
-    }
-}
-
-impl<'f, T, R> Future for TimeoutServiceResponse2<'f, T, R>
-where
-    T: Service<R>,
-{
-    type Output = Result<T::Response, TimeoutError<T::Error>>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        match self.project().fut.poll(cx) {
-            Poll::Ready(Ok(v)) => Poll::Ready(Ok(v)),
-            Poll::Ready(Err(e)) => Poll::Ready(Err(TimeoutError::Service(e))),
-            Poll::Pending => Poll::Pending,
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use std::{fmt, time::Duration};
@@ -217,7 +152,7 @@ mod tests {
     use ntex_service::{apply, fn_factory, Pipeline, Service, ServiceFactory};
 
     use super::*;
-    use crate::future::{lazy, BoxFuture};
+    use crate::future::lazy;
 
     #[derive(Clone, Debug, PartialEq)]
     struct SleepService(Duration);
@@ -234,14 +169,14 @@ mod tests {
     impl Service<()> for SleepService {
         type Response = ();
         type Error = SrvError;
-        type Future<'f> = BoxFuture<'f, Result<(), SrvError>>;
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-            let fut = crate::time::sleep(self.0);
-            Box::pin(async move {
-                fut.await;
-                Ok::<_, SrvError>(())
-            })
+        async fn call<'a>(
+            &'a self,
+            _: (),
+            _: ServiceCtx<'a, Self>,
+        ) -> Result<(), SrvError> {
+            crate::time::sleep(self.0).await;
+            Ok::<_, SrvError>(())
         }
     }
 
diff --git a/ntex-util/src/services/variant.rs b/ntex-util/src/services/variant.rs
index f30672df..0642e30e 100644
--- a/ntex-util/src/services/variant.rs
+++ b/ntex-util/src/services/variant.rs
@@ -1,7 +1,7 @@
 //! Contains `Variant` service and related types and functions.
-use std::{fmt, future::Future, marker::PhantomData, pin::Pin, task::Context, task::Poll};
+use std::{fmt, marker::PhantomData, task::Context, task::Poll};
 
-use ntex_service::{IntoServiceFactory, Service, ServiceCall, ServiceCtx, ServiceFactory};
+use ntex_service::{IntoServiceFactory, Service, ServiceCtx, ServiceFactory};
 
 /// Construct `Variant` service factory.
 ///
@@ -123,8 +123,6 @@ macro_rules! variant_impl ({$mod_name:ident, $enum_type:ident, $srv_type:ident,
     {
         type Response = V1::Response;
         type Error = V1::Error;
-        type Future<'f> = $mod_name::ServiceResponse<
-            ServiceCall<'f, V1, V1R>, $(ServiceCall<'f, $T, $R>),+> where Self: 'f, V1: 'f;
 
         fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
             let mut ready = self.V1.poll_ready(cx)?.is_ready();
@@ -148,11 +146,11 @@ macro_rules! variant_impl ({$mod_name:ident, $enum_type:ident, $srv_type:ident,
             }
         }
 
-        fn call<'a>(&'a self, req: $enum_type<V1R, $($R,)+>, ctx: ServiceCtx<'a, Self>) -> Self::Future<'a>
+        async fn call(&self, req: $enum_type<V1R, $($R,)+>, ctx: ServiceCtx<'_, Self>) -> Result<Self::Response, Self::Error>
         {
             match req {
-                $enum_type::V1(req) => $mod_name::ServiceResponse::V1 { fut: ctx.call(&self.V1, req) },
-                $($enum_type::$T(req) => $mod_name::ServiceResponse::$T { fut: ctx.call(&self.$T, req) },)+
+                $enum_type::V1(req) => ctx.call(&self.V1, req).await,
+                $($enum_type::$T(req) => ctx.call(&self.$T, req).await,)+
             }
         }
     }
@@ -191,111 +189,17 @@ macro_rules! variant_impl ({$mod_name:ident, $enum_type:ident, $srv_type:ident,
     {
         type Response = V1::Response;
         type Error = V1::Error;
-        type InitError = V1::InitError;
         type Service = $srv_type<V1::Service, $($T::Service,)+ V1R, $($R,)+>;
-        type Future<'f> = $mod_name::ServiceFactoryResponse<'f, V1, V1C, $($T,)+ V1R, $($R,)+> where Self: 'f, V1C: 'f;
+        type InitError = V1::InitError;
 
-        fn create(&self, cfg: V1C) -> Self::Future<'_> {
-            $mod_name::ServiceFactoryResponse {
-                V1: None,
-                items: Default::default(),
-                $($T: self.$T.create(cfg.clone()),)+
-                V1_fut: self.V1.create(cfg),
-            }
+        async fn create(&self, cfg: V1C) -> Result<Self::Service, Self::InitError> {
+            Ok($srv_type {
+                V1: self.V1.create(cfg.clone()).await?,
+                $($T: self.$T.create(cfg.clone()).await?,)+
+                _t: PhantomData
+            })
         }
     }
-
-    #[doc(hidden)]
-    #[allow(non_snake_case)]
-    pub mod $mod_name {
-        use super::*;
-
-        pin_project_lite::pin_project! {
-            #[project = ServiceResponseProject]
-            pub enum ServiceResponse<V1: Future, $($T: Future),+>
-            {
-                V1{ #[pin] fut: V1 },
-                $($T{ #[pin] fut: $T },)+
-            }
-        }
-
-        impl<V1, $($T),+> Future for ServiceResponse<V1, $($T),+>
-        where
-            V1: Future,
-            $($T: Future<Output = V1::Output>),+
-        {
-            type Output = V1::Output;
-
-            fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-                match self.project() {
-                    ServiceResponseProject::V1{fut} => fut.poll(cx),
-                    $(ServiceResponseProject::$T{fut} => fut.poll(cx),)+
-                }
-            }
-        }
-
-
-        pin_project_lite::pin_project! {
-            #[doc(hidden)]
-            pub struct ServiceFactoryResponse<'f, V1: ServiceFactory<V1R, V1C>, V1C, $($T: ServiceFactory<$R, V1C>,)+ V1R, $($R,)+>
-            where
-                V1C: 'f,
-                V1: 'f,
-              $($T: 'f,)+
-            {
-                pub(super) V1: Option<V1::Service>,
-                pub(super) items: ($(Option<$T::Service>,)+),
-                #[pin] pub(super) V1_fut: V1::Future<'f>,
-                $(#[pin] pub(super) $T: $T::Future<'f>),+
-            }
-        }
-
-        impl<'f, V1, V1C, $($T,)+ V1R, $($R,)+> Future for ServiceFactoryResponse<'f, V1, V1C, $($T,)+ V1R, $($R,)+>
-        where
-            V1: ServiceFactory<V1R, V1C> + 'f,
-        $($T: ServiceFactory<$R, V1C, Response = V1::Response, Error = V1::Error, InitError = V1::InitError,> + 'f),+
-        {
-            type Output = Result<$srv_type<V1::Service, $($T::Service,)+ V1R, $($R),+>, V1::InitError>;
-
-            fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-                let this = self.project();
-                let mut ready = true;
-
-                if this.V1.is_none() {
-                    match this.V1_fut.poll(cx) {
-                        Poll::Ready(Ok(item)) => {
-                            *this.V1 = Some(item);
-                        }
-                        Poll::Pending => ready = false,
-                        Poll::Ready(Err(e)) => return Poll::Ready(Err(e.into())),
-                    }
-                }
-
-                $(
-                    if this.items.$n.is_none() {
-                        match this.$T.poll(cx) {
-                            Poll::Ready(Ok(item)) => {
-                                this.items.$n = Some(item);
-                            }
-                            Poll::Pending => ready = false,
-                            Poll::Ready(Err(e)) => return Poll::Ready(Err(e.into())),
-                        }
-                    }
-                )+
-
-                    if ready {
-                        Poll::Ready(Ok($srv_type {
-                            V1: this.V1.take().unwrap(),
-                            $($T: this.items.$n.take().unwrap(),)+
-                            _t: PhantomData
-                        }))
-                    } else {
-                        Poll::Pending
-                    }
-            }
-        }
-    }
-
 });
 
 #[rustfmt::skip]
@@ -332,7 +236,7 @@ mod tests {
     use std::task::{Context, Poll};
 
     use super::*;
-    use crate::future::{lazy, Ready};
+    use crate::future::lazy;
 
     #[derive(Clone)]
     struct Srv1;
@@ -340,7 +244,6 @@ mod tests {
     impl Service<()> for Srv1 {
         type Response = usize;
         type Error = ();
-        type Future<'f> = Ready<usize, ()> where Self: 'f;
 
         fn poll_ready(&self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
             Poll::Ready(Ok(()))
@@ -350,8 +253,8 @@ mod tests {
             Poll::Ready(())
         }
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-            Ready::<_, ()>::Ok(1)
+        async fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Result<usize, ()> {
+            Ok(1)
         }
     }
 
@@ -361,7 +264,6 @@ mod tests {
     impl Service<()> for Srv2 {
         type Response = usize;
         type Error = ();
-        type Future<'f> = Ready<usize, ()> where Self: 'f;
 
         fn poll_ready(&self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
             Poll::Ready(Ok(()))
@@ -371,8 +273,8 @@ mod tests {
             Poll::Ready(())
         }
 
-        fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Self::Future<'a> {
-            Ready::<_, ()>::Ok(2)
+        async fn call<'a>(&'a self, _: (), _: ServiceCtx<'a, Self>) -> Result<usize, ()> {
+            Ok(2)
         }
     }
 
diff --git a/ntex-util/src/time/mod.rs b/ntex-util/src/time/mod.rs
index 4d630658..5dbc1525 100644
--- a/ntex-util/src/time/mod.rs
+++ b/ntex-util/src/time/mod.rs
@@ -1,5 +1,5 @@
 //! Utilities for tracking time.
-use std::{cmp, future::Future, pin::Pin, task, task::Poll};
+use std::{cmp, future::poll_fn, future::Future, pin::Pin, task, task::Poll};
 
 mod types;
 mod wheel;
@@ -312,7 +312,7 @@ impl Interval {
 
     #[inline]
     pub async fn tick(&self) {
-        crate::future::poll_fn(|cx| self.poll_tick(cx)).await;
+        poll_fn(|cx| self.poll_tick(cx)).await;
     }
 
     #[inline]