diff --git a/src/domain.py b/src/domain.py
new file mode 100644
index 0000000..439b4e5
--- /dev/null
+++ b/src/domain.py
@@ -0,0 +1,18 @@
+from __future__ import annotations
+import asyncio
+import irc.client_aio
+from typing import TYPE_CHECKING, Optional
+
+
+if TYPE_CHECKING:
+    import src.wiki
+    import src.wiki_ratelimiter
+
+
+class Domain:
+    def __init__(self, task: asyncio.Task, irc_client: Optional[irc.client_aio.AioSimpleIRCClient] = None):
+        self.task = task
+        self.wikis: list[src.wiki.Wiki] = list()
+        self.rate_limiter: src.wiki_ratelimiter = src.wiki_ratelimiter.RateLimiter()
+        self.irc = irc_client
+