diff --git a/01-ingestion/untitled.md b/01-ingestion/1.1.md
similarity index 100%
rename from 01-ingestion/untitled.md
rename to 01-ingestion/1.1.md
diff --git a/01-ingestion/1.2.md b/01-ingestion/1.2.md
new file mode 100644
index 0000000..d1d4f32
--- /dev/null
+++ b/01-ingestion/1.2.md
@@ -0,0 +1,2 @@
+# 1.2 데이터 포맷
+
diff --git a/01-ingestion/1.3.md b/01-ingestion/1.3.md
new file mode 100644
index 0000000..6681154
--- /dev/null
+++ b/01-ingestion/1.3.md
@@ -0,0 +1,2 @@
+# 1.3 데이터 수집 인프라
+
diff --git a/02-processing/untitled.md b/02-processing/2.1.md
similarity index 100%
rename from 02-processing/untitled.md
rename to 02-processing/2.1.md
diff --git a/02-processing/2.2-batch.md b/02-processing/2.2-batch.md
new file mode 100644
index 0000000..2023d78
--- /dev/null
+++ b/02-processing/2.2-batch.md
@@ -0,0 +1,2 @@
+# 2.2 배치 \(Batch\) 처리
+
diff --git a/02-processing/2.3-workflow.md b/02-processing/2.3-workflow.md
new file mode 100644
index 0000000..a83730a
--- /dev/null
+++ b/02-processing/2.3-workflow.md
@@ -0,0 +1,2 @@
+# 2.3 워크플로우 \(Workflow\) 관리
+
diff --git a/02-processing/2.4-stream.md b/02-processing/2.4-stream.md
new file mode 100644
index 0000000..09418ea
--- /dev/null
+++ b/02-processing/2.4-stream.md
@@ -0,0 +1,2 @@
+# 2.4 스트림 \(Stream\) 처리
+
diff --git a/03-analysis-infra/3.1.md b/03-analysis-infra/3.1.md
new file mode 100644
index 0000000..67d578c
--- /dev/null
+++ b/03-analysis-infra/3.1.md
@@ -0,0 +1,2 @@
+# 3.1 데이터 분석 인프라
+
diff --git a/03-analysis-infra/3.2.md b/03-analysis-infra/3.2.md
new file mode 100644
index 0000000..9b19598
--- /dev/null
+++ b/03-analysis-infra/3.2.md
@@ -0,0 +1,2 @@
+# 3.3 데이터 모니터링
+
diff --git a/03-analysis-infra/untitled.md b/03-analysis-infra/untitled.md
index 67d578c..21c9829 100644
--- a/03-analysis-infra/untitled.md
+++ b/03-analysis-infra/untitled.md
@@ -1,2 +1,2 @@
-# 3.1 데이터 분석 인프라
+# 3.2 데이터 조회 시스템
diff --git a/04-data-application/4.2.md b/04-data-application/4.2.md
new file mode 100644
index 0000000..ccce430
--- /dev/null
+++ b/04-data-application/4.2.md
@@ -0,0 +1,2 @@
+# 4.2 통계 서비스
+
diff --git a/04-data-application/4.3.md b/04-data-application/4.3.md
new file mode 100644
index 0000000..d20a8dd
--- /dev/null
+++ b/04-data-application/4.3.md
@@ -0,0 +1,2 @@
+# 4.3 추천 서비스
+
diff --git a/04-data-application/4.4-a-b.md b/04-data-application/4.4-a-b.md
new file mode 100644
index 0000000..3a862c0
--- /dev/null
+++ b/04-data-application/4.4-a-b.md
@@ -0,0 +1,2 @@
+# 4.4 A/B 테스팅
+
diff --git a/README.md b/README.md
index 7d5e1cc..11301f3 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
-# Practical Data Pipeline
+# Practical Data Pipeline \(실용적인 데이터 파이프라인\)
All content is written in Korean.
-
-
diff --git a/SUMMARY.md b/SUMMARY.md
index 8c90774..7309bc3 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -1,20 +1,31 @@
# Table of contents
-* [Practical Data Pipeline](README.md)
+* [Practical Data Pipeline \(실용적인 데이터 파이프라인\)](README.md)
+* [시작 전에 드리는 당부의 말](undefined.md)
-## 01 - INGESTION
+## 01 - 데이터 수집
-* [1.1 데이터 수집](01-ingestion/untitled.md)
+* [1.1 데이터 수집](01-ingestion/1.1.md)
+* [1.2 데이터 포맷](01-ingestion/1.2.md)
+* [1.3 데이터 수집 인프라](01-ingestion/1.3.md)
-## 02 - Processing
+## 02 - 데이터 처리
-* [2.1 데이터 처리](02-processing/untitled.md)
+* [2.1 데이터 처리](02-processing/2.1.md)
+* [2.2 배치 \(Batch\) 처리](02-processing/2.2-batch.md)
+* [2.3 워크플로우 \(Workflow\) 관리](02-processing/2.3-workflow.md)
+* [2.4 스트림 \(Stream\) 처리](02-processing/2.4-stream.md)
-## 03- Analysis Infra
+## 03 - 데이터 분석 인프라
-* [3.1 데이터 분석 인프라](03-analysis-infra/untitled.md)
+* [3.1 데이터 분석 인프라](03-analysis-infra/3.1.md)
+* [3.2 데이터 조회 시스템](03-analysis-infra/untitled.md)
+* [3.3 데이터 모니터링](03-analysis-infra/3.2.md)
## 04 - DATA APPLICATION
* [4.1 데이터 서비스](04-data-application/untitled.md)
+* [4.2 통계 서비스](04-data-application/4.2.md)
+* [4.3 추천 서비스](04-data-application/4.3.md)
+* [4.4 A/B 테스팅](04-data-application/4.4-a-b.md)
diff --git a/undefined.md b/undefined.md
new file mode 100644
index 0000000..4290fd8
--- /dev/null
+++ b/undefined.md
@@ -0,0 +1,2 @@
+# 시작 전에 드리는 당부의 말
+