diff --git a/adapters/atlassian/confluence.py b/adapters/atlassian/confluence.py
new file mode 100644
index 0000000..a7e37f8
--- /dev/null
+++ b/adapters/atlassian/confluence.py
@@ -0,0 +1,254 @@
+"""Confluence Cloud adapter — creates pages via the Confluence REST API v2.
+
+Templates are authored in Markdown (single source of truth).
+This adapter converts Markdown to Confluence Storage Format (XHTML) before uploading.
+Authentication: email + ATLASSIAN_API_TOKEN env var (Basic auth).
+API reference: https://developer.atlassian.com/cloud/confluence/rest/v2/
+"""
+
+from __future__ import annotations
+
+import os
+import re
+from typing import Any
+
+import requests
+
+from src.core.config import CoreConfig
+
+
+def md_to_confluence_storage(text: str) -> str:
+    """Convert a subset of Markdown to Confluence Storage Format (XHTML).
+
+    Covers the constructs used in qms-kit templates:
+    headings, bold, italic, tables, lists, blockquotes, HR, inline code, links.
+    """
+    lines = text.splitlines()
+    out: list[str] = []
+    i = 0
+
+    while i < len(lines):
+        line = lines[i]
+
+        # Headings: # → <h1>, ## → <h2>, up to h6
+        heading = re.match(r"^(#{1,6})\s+(.*)", line)
+        if heading:
+            level = len(heading.group(1))
+            out.append(f"<h{level}>{_cf_inline(heading.group(2).strip())}</h{level}>")
+            i += 1
+            continue
+
+        # Horizontal rule
+        if re.match(r"^(-{3,}|\*{3,}|_{3,})\s*$", line):
+            out.append("<hr/>")
+            i += 1
+            continue
+
+        # Table: collect all consecutive table lines and render together
+        if line.strip().startswith("|"):
+            table_lines: list[str] = []
+            while i < len(lines) and lines[i].strip().startswith("|"):
+                table_lines.append(lines[i])
+                i += 1
+            out.append(_cf_table(table_lines))
+            continue
+
+        # Unordered list: collect consecutive items into one <ul>
+        if re.match(r"^\s*[*\-]\s+", line) and not line.strip().startswith("|"):
+            items: list[str] = []
+            while i < len(lines) and re.match(r"^\s*[*\-]\s+", lines[i]):
+                m = re.match(r"^\s*[*\-]\s+(.*)", lines[i])
+                if m:
+                    items.append(f"<li>{_cf_inline(m.group(1))}</li>")
+                i += 1
+            out.append("<ul>" + "".join(items) + "</ul>")
+            continue
+
+        # Ordered list: collect consecutive items into one <ol>
+        if re.match(r"^\s*\d+\.\s+", line):
+            items = []
+            while i < len(lines) and re.match(r"^\s*\d+\.\s+", lines[i]):
+                m = re.match(r"^\s*\d+\.\s+(.*)", lines[i])
+                if m:
+                    items.append(f"<li>{_cf_inline(m.group(1))}</li>")
+                i += 1
+            out.append("<ol>" + "".join(items) + "</ol>")
+            continue
+
+        # Blockquote
+        if line.startswith(">"):
+            content = line.lstrip("> ").strip()
+            out.append(f"<blockquote><p>{_cf_inline(content)}</p></blockquote>")
+            i += 1
+            continue
+
+        # Empty line → paragraph break
+        if not line.strip():
+            out.append("")
+            i += 1
+            continue
+
+        # Default: wrap in paragraph
+        out.append(f"<p>{_cf_inline(line)}</p>")
+        i += 1
+
+    return "\n".join(out)
+
+
+def _cf_inline(text: str) -> str:
+    """Apply inline Markdown → Confluence Storage Format conversions."""
+    # Bold + italic: ***text***
+    text = re.sub(r"\*{3}(.+?)\*{3}", r"<strong><em>\1</em></strong>", text)
+    # Bold: **text**
+    text = re.sub(r"\*{2}(.+?)\*{2}", r"<strong>\1</strong>", text)
+    # Italic: *text* (single asterisk, not part of **)
+    text = re.sub(r"(?<!\*)\*(?!\*)(.+?)(?<!\*)\*(?!\*)", r"<em>\1</em>", text)
+    # Italic: _text_
+    text = re.sub(r"(?<!_)_(?!_)(.+?)(?<!_)_(?!_)", r"<em>\1</em>", text)
+    # Inline code
+    text = re.sub(r"`([^`]+)`", r"<code>\1</code>", text)
+    # Markdown links: [text](url) → <a href="url">text</a>
+    text = re.sub(r"\[([^\]]+)\]\(([^)]+)\)", r'<a href="\2">\1</a>', text)
+    return text
+
+
+def _cf_table(lines: list[str]) -> str:
+    """Render a Markdown table as Confluence Storage Format XHTML table."""
+    is_header = len(lines) > 1 and re.match(r"^\|[\s\-:|]+\|", lines[1])
+    rows: list[str] = []
+
+    for idx, line in enumerate(lines):
+        if re.match(r"^\|[\s\-:|]+\|", line):
+            continue  # skip separator row
+        cells = [c.strip() for c in line.strip().strip("|").split("|")]
+        tag = "th" if (idx == 0 and is_header) else "td"
+        row = "<tr>" + "".join(f"<{tag}>{_cf_inline(c)}</{tag}>" for c in cells) + "</tr>"
+        rows.append(row)
+
+    return "<table><tbody>" + "".join(rows) + "</tbody></table>"
+
+
+class ConfluenceAdapter:
+    """Seeds QMS document structure into a Confluence Cloud space.
+
+    Templates are Markdown; this adapter converts to Confluence Storage Format before upload.
+    Authentication: email + ATLASSIAN_API_TOKEN env var (Basic auth).
+    """
+
+    def __init__(self, config: CoreConfig) -> None:
+        if config.atlassian is None:
+            raise ValueError("atlassian config block is required for target=atlassian")
+        cf = config.atlassian.confluence
+        self._base_url = cf.base_url.rstrip("/")
+        self._space_key = cf.space_key
+        self._parent_page_title = cf.parent_page_title
+        self._email = cf.email
+        self._token = os.environ.get("ATLASSIAN_API_TOKEN", "")
+
+    @property
+    def _auth(self) -> tuple[str, str]:
+        return (self._email, self._token)
+
+    def _api(self, path: str) -> str:
+        return f"{self._base_url}/api/v2{path}"
+
+    def get_page_id(self, title: str) -> str | None:
+        """Return page ID if a page with this title exists in the space, else None."""
+        resp = requests.get(
+            self._api("/pages"),
+            params={"spaceKey": self._space_key, "title": title},
+            auth=self._auth,
+            headers={"Accept": "application/json"},
+            timeout=15,
+        )
+        resp.raise_for_status()
+        results = resp.json().get("results", [])
+        return results[0]["id"] if results else None
+
+    def create_or_update_page(
+        self,
+        title: str,
+        content: str,
+        parent_id: str | None = None,
+    ) -> str:
+        """Idempotent upsert. Content is Markdown; converted to Storage Format here.
+
+        Returns the page ID.
+        """
+        storage_content = md_to_confluence_storage(content)
+        body: dict[str, Any] = {
+            "spaceId": self._get_space_id(),
+            "title": title,
+            "body": {"representation": "storage", "value": storage_content},
+        }
+        if parent_id:
+            body["parentId"] = parent_id
+
+        existing_id = self.get_page_id(title)
+        if existing_id:
+            # Update existing page — need current version number
+            page = requests.get(
+                self._api(f"/pages/{existing_id}"),
+                auth=self._auth,
+                headers={"Accept": "application/json"},
+                timeout=15,
+            )
+            page.raise_for_status()
+            version = page.json()["version"]["number"] + 1
+            body["version"] = {"number": version}
+            resp = requests.put(
+                self._api(f"/pages/{existing_id}"),
+                json=body,
+                auth=self._auth,
+                timeout=30,
+            )
+        else:
+            resp = requests.post(
+                self._api("/pages"),
+                json=body,
+                auth=self._auth,
+                timeout=30,
+            )
+
+        resp.raise_for_status()
+        return resp.json()["id"]
+
+    def _get_space_id(self) -> str:
+        """Resolve space key to numeric space ID (required by API v2)."""
+        resp = requests.get(
+            self._api("/spaces"),
+            params={"keys": self._space_key},
+            auth=self._auth,
+            headers={"Accept": "application/json"},
+            timeout=15,
+        )
+        resp.raise_for_status()
+        results = resp.json().get("results", [])
+        if not results:
+            raise ValueError(f"Confluence space '{self._space_key}' not found.")
+        return results[0]["id"]
+
+    def deploy(self, rendered_pages: dict[str, tuple[str, str]]) -> None:
+        """Deploy all rendered pages into the Confluence space.
+
+        Structure created:
+          <space>/QM Manual          ← index / root page
+          <space>/QM Manual/<page>   ← all document pages as children
+
+        Args:
+            rendered_pages: page_name -> (title, rendered_markdown)
+        """
+        # Root index page
+        index_entry = rendered_pages.pop("qms_index", None)
+        index_title = self._parent_page_title
+        if index_entry:
+            _, content = index_entry
+            root_id = self.create_or_update_page(index_title, content)
+        else:
+            root_id = self.create_or_update_page(index_title, f"# {index_title}\n")
+        print(f"  Confluence: upserted root page '{index_title}' (id={root_id})")
+
+        # All document pages as children of the root page
+        for _page_name, (title, content) in rendered_pages.items():
+            page_id = self.create_or_update_page(title, content, parent_id=root_id)
+            print(f"  Confluence: upserted '{title}' (id={page_id})")
diff --git a/config/atlassian.yaml b/config/atlassian.yaml
index 7131806..2d7bf96 100644
--- a/config/atlassian.yaml
+++ b/config/atlassian.yaml
@@ -1,27 +1,31 @@
-# Atlassian overlay — Confluence (docs) + Jira (records)  [Phase 2, not yet implemented]
-# TODO: fill all fields before running: deploy --target atlassian
+# Atlassian Cloud overlay — merge over config/core.yaml
+# Copy to config/clients/<client>.yaml and fill in the values.
+# Never commit files from config/clients/ (gitignored).
+# Secret: export ATLASSIAN_API_TOKEN=<your-api-token>
+# One token covers both Confluence and Jira (same Atlassian account).
 
 target: atlassian
 
 organisation:
-  name: "TODO"
-  short: "TODO"
-  quality_officer: "TODO"
-  management: "TODO"
+  name: "Acme GmbH"
+  short: "ACME"
+  quality_officer: "Jane Smith"
+  management: "John Doe"
 
-confluence:
-  base_url: "TODO: https://<org>.atlassian.net/wiki"
-  space_key: "TODO: QMS"
-  # token via env: CONFLUENCE_API_TOKEN
-  # NOTE (verified): approval workflow not native in Confluence Cloud.
-  # Requires Marketplace app (e.g. Comala). Partially automatable only.
+atlassian:
+  confluence:
+    base_url: "https://acme.atlassian.net/wiki"   # trailing /wiki required
+    space_key: "QMS"
+    email: "jane.smith@acme.com"
+    parent_page_title: "QM Manual"
 
-jira:
-  base_url: "TODO: https://<org>.atlassian.net"
-  project_key: "TODO: QMS"
-  # token via env: JIRA_API_TOKEN
-  issue_type_mapping:
-    nc: "TODO"
-    capa: "TODO"
-    audit: "TODO"
-    kpi: "TODO"
+  jira:
+    base_url: "https://acme.atlassian.net"
+    project_key: "QMS"
+    project_name: "Quality Management System"
+    email: "jane.smith@acme.com"
+    issue_type_mapping:
+      nc: "Nonconformity"
+      capa: "Corrective Action"
+      audit: "Internal Audit"
+      kpi: "KPI Measurement"
diff --git a/src/core/config.py b/src/core/config.py
index 384bd85..517491b 100644
--- a/src/core/config.py
+++ b/src/core/config.py
@@ -84,6 +84,26 @@ class SelfhostedConfig(BaseModel):
     redmine: RedmineConfig
 
 
+class ConfluenceConfig(BaseModel):
+    base_url: str  # https://mycompany.atlassian.net/wiki
+    space_key: str  # QMS
+    email: str  # atlassian account email
+    parent_page_title: str = "QM Manual"
+
+
+class JiraConfig(BaseModel):
+    base_url: str  # https://mycompany.atlassian.net
+    project_key: str  # QMS
+    project_name: str = "Quality Management System"
+    email: str  # atlassian account email (same as confluence)
+    issue_type_mapping: dict[str, str] = {}
+
+
+class AtlassianConfig(BaseModel):
+    confluence: ConfluenceConfig
+    jira: JiraConfig
+
+
 class CoreConfig(BaseModel):
     meta: Meta
     organisation: Organisation
@@ -95,6 +115,7 @@ class CoreConfig(BaseModel):
     capa_states: list[CapaState]
     target: str | None = None
     selfhosted: SelfhostedConfig | None = None
+    atlassian: AtlassianConfig | None = None
 
     @field_validator("documents")
     @classmethod
diff --git a/tests/test_confluence.py b/tests/test_confluence.py
new file mode 100644
index 0000000..5b5eb49
--- /dev/null
+++ b/tests/test_confluence.py
@@ -0,0 +1,124 @@
+"""Unit tests for the Markdown → Confluence Storage Format converter and adapter."""
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from adapters.atlassian.confluence import ConfluenceAdapter, _cf_table, md_to_confluence_storage
+from src.core.config import AtlassianConfig, ConfluenceConfig, JiraConfig
+
+
+def _make_config() -> MagicMock:
+    cfg = MagicMock()
+    cfg.atlassian = AtlassianConfig(
+        confluence=ConfluenceConfig(
+            base_url="http://atlassian.test/wiki",
+            space_key="QMS",
+            email="admin@test.com",
+        ),
+        jira=JiraConfig(
+            base_url="http://atlassian.test",
+            project_key="QMS",
+            email="admin@test.com",
+        ),
+    )
+    return cfg
+
+
+class TestMdToConfluenceStorage:
+    def test_h1(self) -> None:
+        assert md_to_confluence_storage("# Title") == "<h1>Title</h1>"
+
+    def test_h2(self) -> None:
+        assert md_to_confluence_storage("## Section") == "<h2>Section</h2>"
+
+    def test_h3(self) -> None:
+        assert md_to_confluence_storage("### Sub") == "<h3>Sub</h3>"
+
+    def test_hr(self) -> None:
+        assert md_to_confluence_storage("---") == "<hr/>"
+
+    def test_bold(self) -> None:
+        assert "<strong>bold</strong>" in md_to_confluence_storage("**bold** text")
+
+    def test_italic_asterisk(self) -> None:
+        assert "<em>italic</em>" in md_to_confluence_storage("*italic* text")
+
+    def test_italic_underscore(self) -> None:
+        assert "<em>italic</em>" in md_to_confluence_storage("_italic_ text")
+
+    def test_link(self) -> None:
+        result = md_to_confluence_storage("[Atlassian](https://atlassian.com)")
+        assert '<a href="https://atlassian.com">Atlassian</a>' in result
+
+    def test_inline_code(self) -> None:
+        assert "<code>cmd</code>" in md_to_confluence_storage("`cmd` here")
+
+    def test_unordered_list_grouped(self) -> None:
+        result = md_to_confluence_storage("- a\n- b\n- c")
+        assert result.startswith("<ul>")
+        assert result.count("<li>") == 3
+        assert result.count("<ul>") == 1
+
+    def test_ordered_list_grouped(self) -> None:
+        result = md_to_confluence_storage("1. x\n2. y")
+        assert result.startswith("<ol>")
+        assert result.count("<li>") == 2
+
+    def test_blockquote(self) -> None:
+        result = md_to_confluence_storage("> note")
+        assert "<blockquote>" in result
+        assert "note" in result
+
+    def test_paragraph(self) -> None:
+        assert md_to_confluence_storage("hello world") == "<p>hello world</p>"
+
+    def test_empty_line(self) -> None:
+        result = md_to_confluence_storage("a\n\nb")
+        assert result == "<p>a</p>\n\n<p>b</p>"
+
+
+class TestCfTable:
+    def test_header_uses_th(self) -> None:
+        lines = ["| A | B |", "|---|---|", "| 1 | 2 |"]
+        result = _cf_table(lines)
+        assert "<th>A</th>" in result
+        assert "<th>B</th>" in result
+
+    def test_data_uses_td(self) -> None:
+        lines = ["| A | B |", "|---|---|", "| 1 | 2 |"]
+        result = _cf_table(lines)
+        assert "<td>1</td>" in result
+
+    def test_separator_skipped(self) -> None:
+        lines = ["| A |", "|---|", "| x |"]
+        result = _cf_table(lines)
+        assert "---" not in result
+
+
+class TestConfluenceAdapter:
+    def test_raises_if_no_atlassian_config(self) -> None:
+        cfg = MagicMock()
+        cfg.atlassian = None
+        with pytest.raises(ValueError, match="atlassian config block"):
+            ConfluenceAdapter(cfg)
+
+    def test_base_url_trailing_slash_stripped(self) -> None:
+        adapter = ConfluenceAdapter(_make_config())
+        assert not adapter._base_url.endswith("/")
+
+    def test_get_page_id_returns_none_on_empty(self) -> None:
+        adapter = ConfluenceAdapter(_make_config())
+        mock_resp = MagicMock()
+        mock_resp.json.return_value = {"results": []}
+        mock_resp.raise_for_status.return_value = None
+        with patch("adapters.atlassian.confluence.requests.get", return_value=mock_resp):
+            assert adapter.get_page_id("Missing Page") is None
+
+    def test_get_page_id_returns_id_when_found(self) -> None:
+        adapter = ConfluenceAdapter(_make_config())
+        mock_resp = MagicMock()
+        mock_resp.json.return_value = {"results": [{"id": "42"}]}
+        mock_resp.raise_for_status.return_value = None
+        with patch("adapters.atlassian.confluence.requests.get", return_value=mock_resp):
+            assert adapter.get_page_id("Existing Page") == "42"