diff --git a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/creo/CreoS3Utils.scala b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/creo/CreoS3Utils.scala
index 560832192..4b1e07448 100644
--- a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/creo/CreoS3Utils.scala
+++ b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/creo/CreoS3Utils.scala
@@ -1,19 +1,29 @@
 package org.openeo.geotrellis.creo
 
+import geotrellis.store.s3.AmazonS3URI
+import org.apache.commons.io.FileUtils
 import org.openeo.geotrelliss3.S3Utils
+import org.slf4j.LoggerFactory
 import software.amazon.awssdk.auth.credentials.{AwsBasicCredentials, StaticCredentialsProvider}
 import software.amazon.awssdk.awscore.retry.conditions.RetryOnErrorCodeCondition
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration
 import software.amazon.awssdk.core.retry.RetryPolicy
 import software.amazon.awssdk.core.retry.backoff.FullJitterBackoffStrategy
 import software.amazon.awssdk.core.retry.conditions.{OrRetryCondition, RetryCondition}
+import software.amazon.awssdk.core.sync.RequestBody
 import software.amazon.awssdk.regions.Region
+import software.amazon.awssdk.services.s3.model._
 import software.amazon.awssdk.services.s3.{S3AsyncClient, S3Client, S3Configuration}
 
 import java.net.URI
+import java.nio.file.{FileAlreadyExistsException, Files, Path}
 import java.time.Duration
+import scala.collection.JavaConverters._
+import scala.collection.immutable.Iterable
+import scala.util.control.Breaks.{break, breakable}
 
 object CreoS3Utils {
+  private val logger = LoggerFactory.getLogger(getClass)
 
   private val cloudFerroRegion: Region = Region.of("RegionOne")
 
@@ -66,8 +76,175 @@ object CreoS3Utils {
     overrideConfig
   }
 
-  def deleteCreoSubFolder(bucket_name: String, subfolder: String) = {
+  //noinspection ScalaWeakerAccess
+  def deleteCreoSubFolder(bucket_name: String, subfolder: String): Unit = {
     val s3Client = getCreoS3Client()
     S3Utils.deleteSubFolder(s3Client, bucket_name, subfolder)
   }
+
+  def isS3(path: String): Boolean = {
+    path.toLowerCase.startsWith("s3:/")
+  }
+
+  private def toAmazonS3URI(path: String): AmazonS3URI = {
+    val correctS3Path = path.replaceFirst("(?i)s3:/(?!/)", "s3://")
+    new AmazonS3URI(correctS3Path)
+  }
+
+  // In the following functions an asset path could be a local path or an S3 path.
+
+  /**
+   * S3 does not have folders, so we interpret the path as a prefix.
+   */
+  def assetDeleteFolders(paths: Iterable[String]): Unit = {
+    for (path <- paths) {
+      if (isS3(path)) {
+        val s3Uri = toAmazonS3URI(path)
+        deleteCreoSubFolder(s3Uri.getBucket, s3Uri.getKey)
+      } else {
+        val p = Path.of(path)
+        if (Files.exists(p)) {
+          if (Files.isDirectory(p)) {
+            FileUtils.deleteDirectory(p.toFile)
+          } else {
+            throw new IllegalArgumentException(f"Can only delete directory here: $path")
+          }
+        }
+      }
+    }
+  }
+
+  def assetDelete(path: String): Unit = {
+    if (isS3(path)) {
+      val s3Uri = toAmazonS3URI(path)
+      val keys = Seq(path)
+      val deleteObjectsRequest = DeleteObjectsRequest.builder
+        .bucket(s3Uri.getBucket)
+        .delete(Delete.builder.objects(keys.map(key => ObjectIdentifier.builder.key(key).build).asJavaCollection).build)
+        .build
+      getCreoS3Client().deleteObjects(deleteObjectsRequest)
+    } else {
+      val p = Path.of(path)
+      if (Files.isDirectory(p)) {
+        throw new IllegalArgumentException(f"Cannot delete directory like this: $path")
+      } else {
+        Files.deleteIfExists(p)
+      }
+    }
+  }
+
+  def asseetPathListDirectChildren(path: String): Set[String] = {
+    if (isS3(path)) {
+      val s3Uri = toAmazonS3URI(path)
+      val listObjectsRequest = ListObjectsRequest.builder
+        .bucket(s3Uri.getBucket)
+        .prefix(s3Uri.getKey)
+        .build
+      val listObjectsResponse = getCreoS3Client().listObjects(listObjectsRequest)
+      listObjectsResponse.contents.asScala.map(o => f"s3://${s3Uri.getBucket}/${o.key}").toSet
+    } else {
+      val list = Files.list(Path.of(path))
+      List(list).map(_.toString).toSet
+    }
+  }
+
+  def assetExists(path: String): Boolean = {
+    if (isS3(path)) {
+      try {
+        // https://stackoverflow.com/a/56038360/1448736
+        val s3Uri = toAmazonS3URI(path)
+        val objectRequest = HeadObjectRequest.builder
+          .bucket(s3Uri.getBucket)
+          .key(s3Uri.getKey)
+          .build
+        getCreoS3Client().headObject(objectRequest)
+        true
+      } catch {
+        case _: NoSuchKeyException => false
+      }
+    } else {
+      Files.exists(Path.of(path))
+    }
+  }
+
+  def copyAsset(pathOrigin: String, pathDestination: String): Unit = {
+    if (isS3(pathOrigin) && isS3(pathDestination)) {
+      val s3UriOrigin = toAmazonS3URI(pathOrigin)
+      val s3UriDestination = toAmazonS3URI(pathDestination)
+      val copyRequest = CopyObjectRequest.builder
+        .sourceBucket(s3UriOrigin.getBucket)
+        .sourceKey(s3UriOrigin.getKey)
+        .destinationBucket(s3UriDestination.getBucket)
+        .destinationKey(s3UriDestination.getKey)
+        .build
+      getCreoS3Client().copyObject(copyRequest)
+    } else if (!isS3(pathOrigin) && !isS3(pathDestination)) {
+      Files.copy(Path.of(pathOrigin), Path.of(pathDestination))
+    } else if (!isS3(pathOrigin) && isS3(pathDestination)) {
+      uploadToS3(Path.of(pathOrigin), pathDestination)
+    } else if (isS3(pathOrigin) && !isS3(pathDestination)) {
+      // TODO: Download
+      throw new IllegalArgumentException(f"S3->local not supported here yet ($pathOrigin, $pathDestination)")
+    } else {
+      throw new IllegalArgumentException(f"Should be impossible to get here ($pathOrigin, $pathDestination)")
+    }
+  }
+
+  def moveAsset(pathOrigin: String, pathDestination: String): Unit = {
+    // This could be optimized using move when on file system.
+    copyAsset(pathOrigin, pathDestination)
+    assetDelete(pathOrigin)
+  }
+
+  def waitTillPathAvailable(path: Path): Unit = {
+    var retry = 0
+    val maxTries = 20
+    while (!assetExists(path.toString)) {
+      if (retry < maxTries) {
+        retry += 1
+        val seconds = 5
+        logger.info(f"Waiting for path to be available. Try $retry/$maxTries (sleep:$seconds seconds): $path")
+        Thread.sleep(seconds * 1000)
+      } else {
+        logger.warn(f"Path is not available after $maxTries tries: $path")
+        // Throw error instead?
+        return
+      }
+    }
+  }
+
+  def moveOverwriteWithRetries(oldPath: Path, newPath: Path): Unit = {
+    var try_count = 1
+    breakable {
+      while (true) {
+        try {
+          if (assetExists(newPath.toString)) {
+            // It might be a partial result of a previous failing task.
+            logger.info(f"Will replace $newPath. (try $try_count)")
+          }
+          Files.deleteIfExists(newPath)
+          Files.move(oldPath, newPath)
+          break
+        } catch {
+          case e: FileAlreadyExistsException =>
+            // Here if another executor wrote the file between the delete and the move statement.
+            try_count += 1
+            if (try_count > 5) {
+              throw e
+            }
+        }
+      }
+    }
+  }
+
+  def uploadToS3(localFile: Path, s3Path: String) = {
+    val s3Uri = toAmazonS3URI(s3Path)
+    val objectRequest = PutObjectRequest.builder
+      .bucket(s3Uri.getBucket)
+      .key(s3Uri.getKey)
+      .build
+
+    getCreoS3Client().putObject(objectRequest, RequestBody.fromFile(localFile))
+    s3Path
+  }
 }
diff --git a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/geotiff/package.scala b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/geotiff/package.scala
index 75a52560d..09c71f563 100644
--- a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/geotiff/package.scala
+++ b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/geotiff/package.scala
@@ -27,20 +27,16 @@ import org.openeo.geotrellis.netcdf.NetCDFRDDWriter.fixedTimeOffset
 import org.openeo.geotrellis.stac.STACItem
 import org.openeo.geotrellis.tile_grid.TileGrid
 import org.slf4j.LoggerFactory
-import software.amazon.awssdk.core.sync.RequestBody
-import software.amazon.awssdk.services.s3.model.PutObjectRequest
 import spire.math.Integral
 import spire.syntax.cfor.cfor
 
 import java.io.IOException
-import java.nio.channels.FileChannel
-import java.nio.file.{FileAlreadyExistsException, Files, NoSuchFileException, Path, Paths}
+import java.nio.file.{Files, Path, Paths}
 import java.time.Duration
 import java.time.format.DateTimeFormatter
 import java.util.{ArrayList, Collections, Map, List => JList}
 import scala.collection.JavaConverters._
 import scala.reflect._
-import scala.util.control.Breaks.{break, breakable}
 
 package object geotiff {
 
@@ -118,7 +114,9 @@ package object geotiff {
     val rand = new java.security.SecureRandom().nextLong()
     val uniqueFolderName = executorAttemptDirectoryPrefix + java.lang.Long.toUnsignedString(rand)
     val executorAttemptDirectory = Paths.get(parentDirectory + "/" + uniqueFolderName)
-    Files.createDirectories(executorAttemptDirectory)
+    if (!CreoS3Utils.isS3(parentDirectory.toString)) {
+      Files.createDirectories(executorAttemptDirectory)
+    }
     executorAttemptDirectory
   }
 
@@ -128,18 +126,17 @@ package object geotiff {
     if (!relativePath.startsWith(executorAttemptDirectoryPrefix)) throw new Exception()
     // Remove the executorAttemptDirectory part from the path:
     val destinationPath = parentDirectory.resolve(relativePath.substring(relativePath.indexOf("/") + 1))
-    waitTillPathAvailable(Path.of(absolutePath))
-    Files.createDirectories(destinationPath.getParent)
-    Files.move(Path.of(absolutePath), destinationPath)
+    CreoS3Utils.waitTillPathAvailable(Path.of(absolutePath))
+    if (!CreoS3Utils.isS3(parentDirectory.toString)) {
+      Files.createDirectories(destinationPath.getParent)
+    }
+    CreoS3Utils.moveAsset(absolutePath, destinationPath.toString) // TODO: Use move instead of copy
     destinationPath
   }
 
-  private def cleanUpExecutorAttemptDirectory(parentDirectory: Path): Unit = {
-    Files.list(parentDirectory).forEach { p =>
-      if (Files.isDirectory(p) && p.getFileName.toString.startsWith(executorAttemptDirectoryPrefix)) {
-        FileUtils.deleteDirectory(p.toFile)
-      }
-    }
+  private def cleanUpExecutorAttemptDirectory(parentDirectory: String): Unit = {
+    val list = CreoS3Utils.asseetPathListDirectChildren(parentDirectory).filter(_.contains(executorAttemptDirectoryPrefix))
+    CreoS3Utils.assetDeleteFolders(list)
   }
 
   /**
@@ -238,7 +235,7 @@ package object geotiff {
         (destinationPath.toString, timestamp, croppedExtent, bandIndices)
     }.toList.asJava
 
-    cleanUpExecutorAttemptDirectory(Path.of(path))
+    cleanUpExecutorAttemptDirectory(path)
 
     res
   }
@@ -324,7 +321,7 @@ package object geotiff {
 
       if (path.endsWith("out")) {
         val beforeOut = path.substring(0, path.length - "out".length)
-        cleanUpExecutorAttemptDirectory(Path.of(beforeOut))
+        cleanUpExecutorAttemptDirectory(beforeOut)
       }
 
       res
@@ -778,7 +775,7 @@ package object geotiff {
           (destinationPath.toString, croppedExtent)
       }.toList.asJava
 
-    cleanUpExecutorAttemptDirectory(Path.of(path).getParent)
+    cleanUpExecutorAttemptDirectory(Path.of(path).getParent.toString)
 
     res
   }
@@ -921,65 +918,14 @@ package object geotiff {
 
     if (path.startsWith("s3:/")) {
       val correctS3Path = path.replaceFirst("s3:/(?!/)", "s3://")
-      uploadToS3(tempFile, correctS3Path)
+      CreoS3Utils.uploadToS3(tempFile, correctS3Path)
     } else {
       // Retry should not be needed at this point, but it is almost free to keep it.
-      moveOverwriteWithRetries(tempFile, Path.of(path))
+      CreoS3Utils.moveOverwriteWithRetries(tempFile, Path.of(path))
       path
     }
   }
 
-  private def waitTillPathAvailable(path: Path): Unit = {
-    var retry = 0
-    val maxTries = 20
-    while (!path.toFile.exists()) {
-      if (retry < maxTries) {
-        retry += 1
-        val seconds = 5
-        logger.info(f"Waiting for path to be available. Try $retry/$maxTries (sleep:$seconds seconds): $path")
-        Thread.sleep(seconds * 1000)
-      } else {
-        logger.warn(f"Path is not available after $maxTries tries: $path")
-        // Throw error instead?
-        return
-      }
-    }
-  }
-
-  def moveOverwriteWithRetries(oldPath: Path, newPath: Path): Unit = {
-    var try_count = 1
-    breakable {
-      while (true) {
-        try {
-          if (newPath.toFile.exists()) {
-            // It might be a partial result of a previous failing task.
-            logger.info(f"Will replace $newPath. (try $try_count)")
-          }
-          Files.deleteIfExists(newPath)
-          Files.move(oldPath, newPath)
-          break
-        } catch {
-          case e: FileAlreadyExistsException =>
-            // Here if another executor wrote the file between the delete and the move statement.
-            try_count += 1
-            if (try_count > 5) {
-              throw e
-            }
-        }
-      }
-    }
-  }
-
-  def uploadToS3(localFile: Path, s3Path: String) = {
-    val s3Uri = new AmazonS3URI(s3Path)
-    val objectRequest = PutObjectRequest.builder
-      .bucket(s3Uri.getBucket)
-      .key(s3Uri.getKey)
-      .build
-
-    CreoS3Utils.getCreoS3Client().putObject(objectRequest, RequestBody.fromFile(localFile))
-    s3Path
-  }
 
   case class ContextSeq[K, V, M](tiles: Iterable[(K, V)], metadata: LayoutDefinition) extends Seq[(K, V)] with Metadata[LayoutDefinition] {
     override def length: Int = tiles.size
diff --git a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/png/package.scala b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/png/package.scala
index 1da4f2b4b..acd5fcfec 100644
--- a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/png/package.scala
+++ b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/png/package.scala
@@ -6,7 +6,8 @@ import geotrellis.raster.render.RGBA
 import geotrellis.raster.{MultibandTile, UByteCellType}
 import geotrellis.spark._
 import geotrellis.vector.{Extent, ProjectedExtent}
-import org.openeo.geotrellis.geotiff.{SRDD, uploadToS3}
+import org.openeo.geotrellis.creo.CreoS3Utils.uploadToS3
+import org.openeo.geotrellis.geotiff.SRDD
 
 import java.io.File
 import java.nio.file.{Files, Paths}
diff --git a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/stac/STACItem.scala b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/stac/STACItem.scala
index 9abfeaf60..5b39bcfa7 100644
--- a/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/stac/STACItem.scala
+++ b/openeo-geotrellis/src/main/scala/org/openeo/geotrellis/stac/STACItem.scala
@@ -1,6 +1,6 @@
 package org.openeo.geotrellis.stac
 
-import org.openeo.geotrellis.geotiff.uploadToS3
+import org.openeo.geotrellis.creo.CreoS3Utils.uploadToS3
 import org.openeo.geotrellis.getTempFile
 import org.slf4j.LoggerFactory