diff --git a/pipeline/models/pipeline.py b/pipeline/models/pipeline.py
new file mode 100644
index 0000000..1b22618
--- /dev/null
+++ b/pipeline/models/pipeline.py
@@ -0,0 +1,40 @@
+from datetime import datetime, timezone
+import enum
+from uuid import UUID
+from pydantic import BaseModel, Field
+
+from models.ingestion import IngestorInput
+
+
+class PipelineStatus(str, enum.Enum):
+    ACTIVE = "active"
+    INACTIVE = "inactive"
+
+
+class RunFrequency(str, enum.Enum):
+    DAILY = "daily"
+    WEEKLY = "weekly"
+    MONTHLY = "monthly"
+
+
+class PipelineConfig(BaseModel):
+    ingestor_config: IngestorInput
+    run_frequency: RunFrequency
+    last_run: datetime | None = None
+    next_run: datetime | None = None
+
+
+class Pipeline(BaseModel):
+    id: UUID
+    name: str
+    description: str
+    config: PipelineConfig
+    status: PipelineStatus = Field(default=PipelineStatus.INACTIVE)
+    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+
+
+class PipelineCreate(BaseModel):
+    name: str
+    description: str
+    config: PipelineConfig
diff --git a/pipeline/services.py b/pipeline/services.py
deleted file mode 100644
index fd7819e..0000000
--- a/pipeline/services.py
+++ /dev/null
@@ -1,68 +0,0 @@
-"""
-Background service to execute pipelines: ingestion → normalization.
-"""
-
-from typing import List, Dict, Any
-from uuid import UUID
-from datetime import datetime
-
-import stores
-import models
-from ingestion.ingestor import Ingestor
-from normalization.normalizer import Normalizer
-from log.logging_utils import setup_run_logging, cleanup_run_logging, pipeline_log
-
-
-def execute_pipeline(pipeline: models.Pipeline, run_id: UUID) -> None:
-    """
-    Execute a pipeline: ingest data, normalize it, and update run status.
-
-    Args:
-        pipeline: The Pipeline model to run.
-        run_id: UUID of the RunResult to update.
-    """
-    run = stores.runs.get(run_id)
-    if not run:
-        return
-
-    # Setup structured per-run logging
-    setup_run_logging(str(pipeline.id), str(run_id))
-    pipeline_log("INFO", "Pipeline run starting", str(pipeline.id), str(run_id), status="RUNNING")
-
-    # Mark as running
-    run.status = 'RUNNING'
-    run.started_at = datetime.utcnow()
-
-    try:
-        # Ingest raw records
-        pipeline_log("INFO", "Ingesting raw records", str(pipeline.id), str(run_id))
-        raw_records: List[Dict[str, Any]] = Ingestor.run(pipeline.sources)
-        pipeline_log("INFO", f"Ingested {len(raw_records)} records", str(pipeline.id), str(run_id))
-
-        # Normalize records
-        normalizer = Normalizer()
-        canonical: List[Dict[str, Any]] = []
-        for raw in raw_records:
-            source_type = raw.get('source_type')
-            source = raw.get('source')
-            if not source_type or not source:
-                pipeline_log("ERROR", "Record missing 'source_type' or 'source'", str(pipeline.id), str(run_id), status="FAILED")
-                raise ValueError("Record missing 'source_type' or 'source'.")
-            norm = normalizer.normalize([raw], source_type, source)
-            canonical.extend(norm)
-
-        # Success
-        run.status = 'COMPLETED'
-        run.finished_at = datetime.utcnow()
-        run.results = canonical
-        pipeline_log("SUCCESS", f"Pipeline run completed with {len(canonical)} records", str(pipeline.id), str(run_id), status="COMPLETED")
-
-    except Exception as e:
-        # Log failure with stack trace
-        pipeline_log("ERROR", f"Pipeline run failed: {e}", str(pipeline.id), str(run_id), status="FAILED", error=str(e))
-        run.status = 'FAILED'
-        run.finished_at = datetime.utcnow()
-        run.error = str(e)
-    finally:
-        pipeline_log("INFO", "Pipeline run finished", str(pipeline.id), str(run_id), status=run.status)
-        cleanup_run_logging(str(run_id))
\ No newline at end of file
diff --git a/pipeline/services/__init__.py b/pipeline/services/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/pipeline/services/pipeline_service.py b/pipeline/services/pipeline_service.py
new file mode 100644
index 0000000..0f3416f
--- /dev/null
+++ b/pipeline/services/pipeline_service.py
@@ -0,0 +1,185 @@
+from datetime import datetime, timezone
+from uuid import UUID, uuid4
+from loguru import logger
+
+from models.pipeline import (
+    Pipeline,
+    PipelineCreate,
+    PipelineConfig,
+    RunFrequency,
+    PipelineStatus,
+)
+from models.ingestion import IngestorInput
+from stores.base import PipelineStore
+
+
+class PipelineService:
+    def __init__(self, store: PipelineStore):
+        self.store = store
+        logger.info(f"PipelineService initialized with store: {type(store).__name__}")
+
+    async def create_pipeline(
+        self,
+        name: str,
+        description: str,
+        ingestor_config: IngestorInput,
+        run_frequency: RunFrequency,
+    ) -> Pipeline:
+        """Create a new pipeline using the store"""
+        logger.info(
+            f"Creating pipeline: name={name}, description={description}, ingestor_config=..., run_frequency={run_frequency}"
+        )
+        try:
+            pipeline_id = uuid4()
+            now = datetime.now(timezone.utc)
+            pipeline = Pipeline(
+                id=pipeline_id,
+                name=name,
+                description=description,
+                config=PipelineConfig(
+                    ingestor_config=ingestor_config,
+                    run_frequency=run_frequency,
+                    # will be set by scheduler
+                    last_run=None,
+                    next_run=None,
+                ),
+                status=PipelineStatus.INACTIVE,
+                created_at=now,
+                updated_at=now,
+            )
+            await self.store.save(pipeline)
+            logger.info(f"Pipeline created and saved: id={pipeline.id}")
+            return pipeline
+        except Exception as e:
+            logger.error(f"Failed to create pipeline: {e}")
+            raise e
+
+    async def update_pipeline(
+        self, pipeline_id: UUID, pipeline_in: PipelineCreate
+    ) -> Pipeline | None:
+        """Update an existing pipeline using the store"""
+        logger.info(f"Updating pipeline: id={pipeline_id}, update_data=...")
+        existing_pipeline = await self.store.get(pipeline_id)
+        if not existing_pipeline:
+            logger.warning(f"Pipeline not found for update: id={pipeline_id}")
+            return None
+
+        try:
+            # TODO: review code here
+            # Create an updated pipeline object based on existing one and input
+            # Be careful about mutable defaults if not using Pydantic properly
+            update_data = pipeline_in.model_dump(
+                exclude_unset=True
+            )  # Get only provided fields
+
+            # Merge update_data into a dict representation of the existing pipeline
+            # Note: This simplistic merge might need refinement based on how partial updates should behave,
+            # especially for nested structures like 'config'. Pydantic's model_update might be useful here if applicable.
+            updated_pipeline_data = existing_pipeline.model_dump()
+
+            if "name" in update_data:
+                updated_pipeline_data["name"] = update_data["name"]
+            if "description" in update_data:
+                updated_pipeline_data["description"] = update_data["description"]
+
+            # Merge config - replace the whole config if provided in input
+            if "config" in update_data:
+                # Ensure the input config is a PipelineConfig object before assignment
+                if pipeline_in.config:
+                    updated_pipeline_data["config"] = pipeline_in.config.model_dump()
+                else:
+                    # Handle cases where config might be passed differently if needed
+                    logger.error("Invalid config format for update")
+                    raise ValueError("Invalid config format for update")
+
+            # Re-validate the merged data into a Pipeline object
+            # Preserve original ID and created_at
+            updated_pipeline = Pipeline.model_validate(updated_pipeline_data)
+            # updated_at is handled by the store's save method
+
+            await self.store.save(updated_pipeline)  # Save the updated object
+            logger.info(f"Pipeline updated: id={updated_pipeline.id}")
+            return updated_pipeline
+        except Exception as e:
+            logger.error(f"Failed to update pipeline id={pipeline_id}: {e}")
+            raise e
+
+    async def delete_pipeline(self, pipeline_id: UUID) -> bool:
+        """Delete an existing pipeline using the store"""
+        logger.info(f"Deleting pipeline: id={pipeline_id}")
+        deleted = await self.store.delete(pipeline_id)
+        if not deleted:
+            logger.warning(f"Pipeline not found for deletion: id={pipeline_id}")
+        return deleted
+
+    async def get_pipeline(self, pipeline_id: UUID) -> Pipeline | None:
+        """Get a single pipeline by ID"""
+        logger.info(f"Getting pipeline: id={pipeline_id}")
+        return await self.store.get(pipeline_id)
+
+    async def list_pipelines(self) -> list[Pipeline]:
+        """Get all pipelines"""
+        logger.info("Listing all pipelines")
+        return await self.store.get_all()
+
+    async def run_pipeline(self, pipeline_id: UUID) -> None:
+        """Run an existing pipeline"""
+        pipeline = await self.store.get(pipeline_id)
+        if not pipeline:
+            logger.error(f"Cannot run pipeline: Pipeline not found (id={pipeline_id})")
+            return
+        if pipeline.status == PipelineStatus.ACTIVE:
+            logger.warning(
+                f"Pipeline id={pipeline_id} is already active/running (status={pipeline.status}). Skipping run."
+            )
+            return
+
+        logger.info(
+            f"Attempting to run pipeline: id={pipeline_id}, name='{pipeline.name}'"
+        )
+
+        try:
+            # 2. Update status to ACTIVE (optional, depends on desired state mgmt)
+            # pipeline.status = PipelineStatus.ACTIVE
+            # pipeline.config.last_run = datetime.now(timezone.utc) # Mark start time
+            # await self.store.save(pipeline)
+
+            # 3. Execute the actual pipeline logic (ingestion, processing, etc.)
+            # This part depends heavily on your pipeline runner implementation
+            # It would use pipeline.config.ingestor_config, etc.
+            logger.info(f"Executing pipeline logic for id={pipeline_id}...")
+            # ...
+            # result = await actual_pipeline_runner(pipeline.config)
+            # ...
+            logger.info(f"Pipeline logic finished for id={pipeline_id}.")
+
+            # 4. Update status (e.g., back to INACTIVE) and run times on completion
+            # Fetch the latest state in case it changed during run
+            current_pipeline_state = await self.store.get(pipeline_id)
+            if current_pipeline_state:
+                current_pipeline_state.status = (
+                    PipelineStatus.INACTIVE
+                )  # Or COMPLETED if you have that state
+                current_pipeline_state.config.last_run = datetime.now(
+                    timezone.utc
+                )  # Mark end time
+                # TODO: Calculate next_run based on current_pipeline_state.config.run_frequency
+                # current_pipeline_state.config.next_run = calculate_next_run(...)
+                await self.store.save(current_pipeline_state)
+                logger.info(
+                    f"Pipeline run finished and state updated for id={pipeline_id}"
+                )
+            else:
+                logger.warning(
+                    f"Pipeline id={pipeline_id} disappeared during run. Cannot update final state."
+                )
+
+        except Exception as e:
+            logger.error(f"Failed during pipeline run id={pipeline_id}: {e}")
+            # Optionally update status to FAILED
+            current_pipeline_state = await self.store.get(pipeline_id)
+            if current_pipeline_state:
+                # current_pipeline_state.status = PipelineStatus.FAILED # Add a FAILED state if desired
+                await self.store.save(current_pipeline_state)
+            # Handle/log the error appropriately
+            # raise # Optionally re-raise
diff --git a/pipeline/stores.py b/pipeline/stores.py
deleted file mode 100644
index 8f36714..0000000
--- a/pipeline/stores.py
+++ /dev/null
@@ -1,76 +0,0 @@
-"""
-In‐memory stores for pipelines and runs.
-"""
-
-from typing import Dict, List, Optional
-from uuid import UUID, uuid4
-from datetime import datetime
-
-import models
-
-# In‐memory storage
-pipelines: Dict[UUID, models.Pipeline] = {}
-runs: Dict[UUID, models.RunResult] = {}
-
-
-def create_pipeline(pipeline_in: models.PipelineCreate) -> models.Pipeline:
-    """
-    Create and store a new pipeline.
-    """
-    pipeline_id = uuid4()
-    now = datetime.utcnow()
-    pipeline = models.Pipeline(
-        id=pipeline_id,
-        name=pipeline_in.name,
-        sources=pipeline_in.sources,
-        created_at=now,
-    )
-    pipelines[pipeline_id] = pipeline
-    return pipeline
-
-
-def get_pipeline(pipeline_id: UUID) -> Optional[models.Pipeline]:
-    """
-    Retrieve a pipeline by its ID.
-    """
-    return pipelines.get(pipeline_id)
-
-
-def list_pipelines() -> List[models.Pipeline]:
-    """
-    List all registered pipelines.
-    """
-    return list(pipelines.values())
-
-
-def create_run(pipeline_id: UUID) -> models.RunResult:
-    """
-    Create and store a new run for a given pipeline.
-    """
-    run_id = uuid4()
-    now = datetime.utcnow()
-    run = models.RunResult(
-        id=run_id,
-        pipeline_id=pipeline_id,
-        status='PENDING',
-        started_at=now,
-        finished_at=None,
-        results=None,
-        error=None,
-    )
-    runs[run_id] = run
-    return run
-
-
-def get_run(run_id: UUID) -> Optional[models.RunResult]:
-    """
-    Retrieve a run by its ID.
-    """
-    return runs.get(run_id)
-
-
-def list_runs_for_pipeline(pipeline_id: UUID) -> List[models.RunResult]:
-    """
-    List all runs for a specific pipeline.
-    """
-    return [r for r in runs.values() if r.pipeline_id == pipeline_id]
\ No newline at end of file
diff --git a/pipeline/stores/__init__.py b/pipeline/stores/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/pipeline/stores/base.py b/pipeline/stores/base.py
new file mode 100644
index 0000000..e72fd92
--- /dev/null
+++ b/pipeline/stores/base.py
@@ -0,0 +1,62 @@
+from abc import ABC, abstractmethod
+from typing import List, Optional
+from uuid import UUID
+
+from models.pipeline import Pipeline, PipelineCreate
+
+
+class PipelineStore(ABC):
+    """
+    Abstract Base Class for pipeline persistence.
+    Defines the contract for saving, retrieving, and deleting pipelines.
+    """
+
+    @abstractmethod
+    async def save(self, pipeline: Pipeline) -> None:
+        """
+        Save a pipeline (create or update).
+        Implementations should handle checking if the ID exists
+        and performing an insert or update accordingly.
+        They should also update the 'updated_at' timestamp.
+        """
+        pass
+
+    @abstractmethod
+    async def get(self, pipeline_id: UUID) -> Optional[Pipeline]:
+        """
+        Retrieve a pipeline by its ID.
+        Returns the Pipeline object if found, otherwise None.
+        """
+        pass
+
+    @abstractmethod
+    async def get_all(self) -> List[Pipeline]:
+        """
+        Retrieve all pipelines.
+        Returns a list of Pipeline objects.
+        """
+        pass
+
+    @abstractmethod
+    async def delete(self, pipeline_id: UUID) -> bool:
+        """
+        Delete a pipeline by its ID.
+        Returns True if deletion was successful, False otherwise (e.g., if not found).
+        """
+        pass
+
+    @abstractmethod
+    async def update(self, pipeline_id: UUID, pipeline_in: PipelineCreate) -> Pipeline:
+        """
+        Update an existing pipeline.
+        Returns the updated Pipeline object.
+        """
+        pass
+
+    async def connect(self) -> None:
+        """Optional: Perform setup/connection logic."""
+        pass
+
+    async def disconnect(self) -> None:
+        """Optional: Perform cleanup/disconnection logic."""
+        pass
diff --git a/pipeline/stores/memory.py b/pipeline/stores/memory.py
new file mode 100644
index 0000000..145d3e9
--- /dev/null
+++ b/pipeline/stores/memory.py
@@ -0,0 +1,61 @@
+from datetime import datetime, timezone
+from typing import Dict, List, Optional
+from uuid import UUID
+
+from loguru import logger
+
+from models.pipeline import Pipeline, PipelineCreate
+from .base import PipelineStore
+
+
+class InMemoryPipelineStore(PipelineStore):
+    """
+    In-memory implementation of the PipelineStore.
+    Stores pipelines in a simple dictionary. Not persistent across restarts.
+    """
+
+    _pipelines: Dict[UUID, Pipeline]
+
+    def __init__(self):
+        logger.info("Initializing InMemoryPipelineStore")
+        self._pipelines = {}
+
+    async def save(self, pipeline: Pipeline) -> None:
+        logger.debug(f"Saving pipeline (in-memory): id={pipeline.id}")
+        pipeline.updated_at = datetime.now(timezone.utc)
+        self._pipelines[pipeline.id] = pipeline.model_copy(deep=True)
+        logger.info(f"Pipeline saved (in-memory): id={pipeline.id}")
+
+    async def get(self, pipeline_id: UUID) -> Optional[Pipeline]:
+        logger.debug(f"Getting pipeline (in-memory): id={pipeline_id}")
+        pipeline = self._pipelines.get(pipeline_id)
+        if pipeline:
+            return pipeline.model_copy(deep=True)
+        logger.warning(f"Pipeline not found (in-memory): id={pipeline_id}")
+        return None
+
+    async def get_all(self) -> List[Pipeline]:
+        logger.debug("Getting all pipelines (in-memory)")
+        return [p.model_copy(deep=True) for p in self._pipelines.values()]
+
+    async def delete(self, pipeline_id: UUID) -> bool:
+        logger.debug(f"Deleting pipeline (in-memory): id={pipeline_id}")
+        if pipeline_id in self._pipelines:
+            del self._pipelines[pipeline_id]
+            logger.info(f"Pipeline deleted (in-memory): id={pipeline_id}")
+            return True
+        logger.warning(f"Pipeline not found for deletion (in-memory): id={pipeline_id}")
+        return False
+
+    async def update(self, pipeline_id: UUID, pipeline_in: PipelineCreate) -> Pipeline:
+        logger.debug(f"Updating pipeline (in-memory): id={pipeline_id}")
+        pipeline = self._pipelines.get(pipeline_id)
+        if not pipeline:
+            raise ValueError(f"Pipeline not found (in-memory): id={pipeline_id}")
+        pipeline.name = pipeline_in.name
+        pipeline.description = pipeline_in.description
+        pipeline.config = pipeline_in.config
+        pipeline.updated_at = datetime.now(timezone.utc)
+        self._pipelines[pipeline_id] = pipeline.model_copy(deep=True)
+        logger.info(f"Pipeline updated (in-memory): id={pipeline_id}")
+        return pipeline.model_copy(deep=True)