diff --git a/Makefile b/Makefile
index abbb6df..dd77caa 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ all: clean test build install
 
 build/$(APPNAME):
 	@echo $(TS) Building $(APPAME) ...
-	@go build -ldflags $(LDFLAGS) -o build/$(APPNAME) platform/main/main.go
+	@go build -ldflags $(LDFLAGS) -o build/$(APPNAME) main.go
 	@echo $(TS) Done.
 
 build: build/$(APPNAME)
@@ -20,7 +20,7 @@ install:
 	@echo $(TS) Installing $(APPNAME) ...
 	@cp build/$(APPNAME) $(GOPATH)/bin/
 	@mkdir -p $(HOME)/esp32/
-	@cp infrastructure/ino/mapping.json $(HOME)/esp32/mapping.json
+	@cp mapping.json $(HOME)/esp32/mapping.json
 	@echo $(TS) Done.
 
 packages:
diff --git a/business/transpiler/transpiler.go b/api/transpiler/transpiler.go
similarity index 100%
rename from business/transpiler/transpiler.go
rename to api/transpiler/transpiler.go
diff --git a/api/worker/mapping.go b/api/worker/mapping.go
new file mode 100644
index 0000000..1fe54a9
--- /dev/null
+++ b/api/worker/mapping.go
@@ -0,0 +1,7 @@
+package worker
+
+// Mapping specifies the api logic to apply transformation to a specific identifier.
+type Mapping interface {
+	Apply(ident string) string
+	Read() error
+}
diff --git a/business/worker/source.go b/api/worker/source.go
similarity index 100%
rename from business/worker/source.go
rename to api/worker/source.go
diff --git a/business/worker/target.go b/api/worker/target.go
similarity index 100%
rename from business/worker/target.go
rename to api/worker/target.go
diff --git a/api/worker/worker.go b/api/worker/worker.go
new file mode 100644
index 0000000..610a4b7
--- /dev/null
+++ b/api/worker/worker.go
@@ -0,0 +1,6 @@
+package worker
+
+// Worker specifies the api logic of transforming a source code format into another target format.
+type Worker interface {
+	Start() error
+}
diff --git a/business/worker/mapping.go b/business/worker/mapping.go
deleted file mode 100644
index e59f63b..0000000
--- a/business/worker/mapping.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package worker
-
-// Mapping specifies the business logic to apply transformation to a specific identifier.
-type Mapping interface {
-	Apply(ident string) string
-	Read() error
-}
diff --git a/business/worker/worker.go b/business/worker/worker.go
deleted file mode 100644
index 8e651d5..0000000
--- a/business/worker/worker.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package worker
-
-// Worker specifies the business logic of transforming a source code format into another target format.
-type Worker interface {
-	Start() error
-}
diff --git a/application/transpile/transpile.go b/impl/transpile/transpile.go
similarity index 82%
rename from application/transpile/transpile.go
rename to impl/transpile/transpile.go
index cd9986d..d611696 100644
--- a/application/transpile/transpile.go
+++ b/impl/transpile/transpile.go
@@ -2,8 +2,8 @@ package transpile
 
 import (
 	"fmt"
-	"github.com/andygeiss/esp32-transpiler/business/transpiler"
-	"github.com/andygeiss/esp32-transpiler/business/worker"
+	"github.com/andygeiss/esp32-transpiler/api/transpiler"
+	"github.com/andygeiss/esp32-transpiler/api/worker"
 )
 
 // Transpiler uses a given worker to main source code.
diff --git a/application/transpile/transpile_test.go b/impl/transpile/transpile_test.go
similarity index 85%
rename from application/transpile/transpile_test.go
rename to impl/transpile/transpile_test.go
index a77cd8b..0ad072b 100644
--- a/application/transpile/transpile_test.go
+++ b/impl/transpile/transpile_test.go
@@ -3,8 +3,8 @@ package transpile_test
 import (
 	"bytes"
 	. "github.com/andygeiss/assert"
-	"github.com/andygeiss/esp32-transpiler/application/transpile"
-	"github.com/andygeiss/esp32-transpiler/business/worker"
+	"github.com/andygeiss/esp32-transpiler/impl/transpile"
+	"github.com/andygeiss/esp32-transpiler/api/worker"
 	"io"
 	"testing"
 )
diff --git a/infrastructure/ino/mapping.go b/impl/worker/mapping.go
similarity index 81%
rename from infrastructure/ino/mapping.go
rename to impl/worker/mapping.go
index e4ccac7..eaa3590 100644
--- a/infrastructure/ino/mapping.go
+++ b/impl/worker/mapping.go
@@ -1,12 +1,12 @@
-package ino
+package worker
 
 import (
 	"encoding/json"
-	"github.com/andygeiss/esp32-transpiler/business/worker"
+	"github.com/andygeiss/esp32-transpiler/api/worker"
 	"io/ioutil"
 )
 
-// Mapping specifies the business logic to apply transformation to a specific Golang identifier by reading simple JSON map.
+// Mapping specifies the api logic to apply transformation to a specific Golang identifier by reading simple JSON map.
 type Mapping struct {
 	Filename string            `json:"filename"`
 	Rules    map[string]string `json:"rules"`
diff --git a/infrastructure/ino/mapping.json b/impl/worker/mapping.json
similarity index 100%
rename from infrastructure/ino/mapping.json
rename to impl/worker/mapping.json
diff --git a/infrastructure/ino/worker.go b/impl/worker/worker.go
similarity index 97%
rename from infrastructure/ino/worker.go
rename to impl/worker/worker.go
index bafcf88..bc1bfdc 100644
--- a/infrastructure/ino/worker.go
+++ b/impl/worker/worker.go
@@ -1,8 +1,8 @@
-package ino
+package worker
 
 import (
 	"fmt"
-	"github.com/andygeiss/esp32-transpiler/business/worker"
+	"github.com/andygeiss/esp32-transpiler/api/worker"
 	"go/ast"
 	"go/parser"
 	"go/token"
@@ -19,7 +19,7 @@ const (
 
 var mapping worker.Mapping
 
-// Worker specifies the business logic of transforming a source code format into another target format.
+// Worker specifies the api logic of transforming a source code format into another target format.
 type Worker struct {
 	in  io.Reader
 	out io.Writer
diff --git a/infrastructure/ino/worker_test.go b/impl/worker/worker_test.go
similarity index 87%
rename from infrastructure/ino/worker_test.go
rename to impl/worker/worker_test.go
index 5c24468..d851098 100644
--- a/infrastructure/ino/worker_test.go
+++ b/impl/worker/worker_test.go
@@ -1,9 +1,8 @@
-package ino_test
+package worker
 
 import (
 	"bytes"
 	. "github.com/andygeiss/assert"
-	"github.com/andygeiss/esp32-transpiler/infrastructure/ino"
 	"strings"
 	"testing"
 )
@@ -21,10 +20,10 @@ func Trim(s string) string {
 // The Worker will be started and used to transform the source into an Arduino sketch format.
 func Validate(source, expected string, t *testing.T) {
 	var in, out bytes.Buffer
-	mapping := ino.NewMapping("mapping.json")
+	mapping := NewMapping("mapping.json")
 	Assert(t, mapping.Read(), IsNil())
 	in.WriteString(source)
-	worker := ino.NewWorker(&in, &out, mapping)
+	worker := NewWorker(&in, &out, mapping)
 	Assert(t, worker.Start(), IsNil())
 	code := out.String()
 	tcode, texpected := Trim(code), Trim(expected)
@@ -222,10 +221,10 @@ func TestFunctionWithFunctionParam(t *testing.T) {
 
 func TestPackageImport(t *testing.T) {
 	source := `package test
-	import "github.com/andygeiss/esp32-mqtt/business/controller"
-	import "github.com/andygeiss/esp32-mqtt/business/controller/serial"
-	import "github.com/andygeiss/esp32/business/controller/timer"
-	import wifi "github.com/andygeiss/esp32/business/controller/wifi"
+	import "github.com/andygeiss/esp32-mqtt/api/controller"
+	import "github.com/andygeiss/esp32-mqtt/api/controller/serial"
+	import "github.com/andygeiss/esp32/api/controller/timer"
+	import wifi "github.com/andygeiss/esp32/api/controller/wifi"
 	`
 	expected := `
 	#include <WiFi.h>
@@ -236,9 +235,9 @@ func TestPackageImport(t *testing.T) {
 func TestPackageImport_ButIgnoreController(t *testing.T) {
 	source := `package test
 	import controller "github.com/andygeiss/esp32-controller"
-	import "github.com/andygeiss/esp32-mqtt/business/controller/serial"
-	import "github.com/andygeiss/esp32/business/controller/timer"
-	import wifi "github.com/andygeiss/esp32/business/controller/wifi"
+	import "github.com/andygeiss/esp32-mqtt/api/controller/serial"
+	import "github.com/andygeiss/esp32/api/controller/timer"
+	import wifi "github.com/andygeiss/esp32/api/controller/wifi"
 	`
 	expected := `
 	#include <WiFi.h>
diff --git a/platform/main/main.go b/main.go
similarity index 81%
rename from platform/main/main.go
rename to main.go
index 910b4e1..2eec211 100644
--- a/platform/main/main.go
+++ b/main.go
@@ -1,11 +1,11 @@
-package main
+package esp32_transpiler
 
 import (
 	"flag"
 	"fmt"
-	"github.com/andygeiss/esp32-transpiler/application/transpile"
-	"github.com/andygeiss/esp32-transpiler/infrastructure/ino"
-	"github.com/andygeiss/log"
+	"github.com/andygeiss/esp32-transpiler/impl/transpile"
+	"github.com/andygeiss/esp32-transpiler/impl/worker"
+	log "github.com/andygeiss/log/impl"
 	"os"
 )
 
@@ -36,7 +36,7 @@ func printUsage() {
 	flag.PrintDefaults()
 	fmt.Print("\n")
 	fmt.Print("Example:\n")
-	fmt.Printf("\tesp32 -source application/blink/controller.go -target application/blink/controller.ino\n\n")
+	fmt.Printf("\tesp32 -source impl/blink/controller.go -target impl/blink/controller.worker\n\n")
 }
 
 func safeTranspile(mapping, source, target string) {
@@ -53,11 +53,11 @@ func safeTranspile(mapping, source, target string) {
 		log.Fatal("Arduino sketch file [%s] could not be opened! %v", target, err)
 	}
 	// Transpiles the Golang source into Arduino sketch.
-	m := ino.NewMapping(mapping)
+	m := worker.NewMapping(mapping)
 	if err := m.Read(); err != nil {
 		log.Fatal("%v", err)
 	}
-	worker := ino.NewWorker(in, out, m)
+	worker := worker.NewWorker(in, out, m)
 	trans := transpile.NewTranspiler(worker)
 	if err := trans.Transpile(); err != nil {
 		log.Fatal("%v", err)
diff --git a/mapping.json b/mapping.json
new file mode 100644
index 0000000..081ab06
--- /dev/null
+++ b/mapping.json
@@ -0,0 +1,47 @@
+{
+    "digital.Low": "LOW",
+    "digital.High": "HIGH",
+    "digital.ModeInput": "INPUT",
+    "digital.ModeOutput": "OUTPUT",
+    "digital.PinMode": "pinMode",
+    "digital.Write": "digitalWrite",
+    "random.Num": "random",
+    "random.NumBetween": "random",
+    "random.Seed": "randomSeed",
+    "serial.Available": "Serial.available",
+    "serial.BaudRate300": "300",
+    "serial.BaudRate600": "600",
+    "serial.BaudRate1200": "1200",
+    "serial.BaudRate2400": "2400",
+    "serial.BaudRate4800": "4800",
+    "serial.BaudRate9600": "9600",
+    "serial.BaudRate14400": "14400",
+    "serial.BaudRate28800": "28800",
+    "serial.BaudRate38400": "38400",
+    "serial.BaudRate57600": "57600",
+    "serial.BaudRate115200": "115200",
+    "serial.Begin": "Serial.begin",
+    "serial.Print": "Serial.print",
+    "serial.Println": "Serial.println",
+    "timer.Delay": "delay",
+    "wifi": "WiFi",
+    "wifi.Begin": "WiFi.begin",
+    "wifi.BeginEncrypted": "WiFi.begin",
+    "wifi.BSSID": "WiFi.BSSID",
+    "wifi.Disconnect": "WiFi.disconnect",
+    "wifi.EncryptionType": "WiFi.encryptionType",
+    "wifi.EncryptionTypeAuto": "8",
+    "wifi.EncryptionTypeCCMP": "4",
+    "wifi.EncryptionTypeNone": "7",
+    "wifi.EncryptionTypeTKIP": "2",
+    "wifi.EncryptionTypeWEP": "5",
+    "wifi.LocalIP": "WiFi.localIP",
+    "wifi.RSSI": "WiFi.RSSI",
+    "wifi.ScanNetworks": "WiFi.scanNetworks",
+    "wifi.SetDNS": "WiFi.setDNS",
+    "wifi.SSID": "WiFi.SSID",
+    "wifi.StatusConnected": "WL_CONNECTED",
+    "wifi.StatusIdle": "WL_IDLE",
+    "Loop": "void loop",
+    "Setup": "void setup"
+}
\ No newline at end of file