diff --git a/src/api/SIGCM2.Application/Abstractions/Persistence/IProductRepository.cs b/src/api/SIGCM2.Application/Abstractions/Persistence/IProductRepository.cs
new file mode 100644
index 0000000..3d7ff94
--- /dev/null
+++ b/src/api/SIGCM2.Application/Abstractions/Persistence/IProductRepository.cs
@@ -0,0 +1,29 @@
+using SIGCM2.Application.Common;
+using SIGCM2.Domain.Entities;
+
+namespace SIGCM2.Application.Abstractions.Persistence;
+
+/// <summary>
+/// Write-side repository for Product.
+/// All reads needed by write handlers are included here.
+/// </summary>
+public interface IProductRepository
+{
+    /// <summary>Inserts a new Product and returns the DB-assigned Id.</summary>
+    Task<int> AddAsync(Product product, CancellationToken ct = default);
+
+    /// <summary>Returns the Product with the given Id, or null if not found.</summary>
+    Task<Product?> GetByIdAsync(int id, CancellationToken ct = default);
+
+    /// <summary>Returns a paged result of Products matching the query.</summary>
+    Task<PagedResult<Product>> GetPagedAsync(ProductsQuery query, CancellationToken ct = default);
+
+    /// <summary>Persists all changes to an existing Product row.</summary>
+    Task UpdateAsync(Product product, CancellationToken ct = default);
+
+    /// <summary>
+    /// Returns true if an active Product with the same Nombre exists for the given MedioId+ProductTypeId combination.
+    /// Pass excludeId to skip the self-comparison during rename (update scenario).
+    /// </summary>
+    Task<bool> ExistsByNombreAsync(string nombre, int medioId, int productTypeId, int? excludeId = null, CancellationToken ct = default);
+}
diff --git a/src/api/SIGCM2.Application/Common/ProductsQuery.cs b/src/api/SIGCM2.Application/Common/ProductsQuery.cs
new file mode 100644
index 0000000..c2ab7cb
--- /dev/null
+++ b/src/api/SIGCM2.Application/Common/ProductsQuery.cs
@@ -0,0 +1,13 @@
+namespace SIGCM2.Application.Common;
+
+/// <summary>
+/// Query parameters for listing Products (used by IProductRepository.GetPagedAsync).
+/// </summary>
+public sealed record ProductsQuery(
+    int Page = 1,
+    int PageSize = 20,
+    bool? Activo = true,
+    string? Search = null,
+    int? MedioId = null,
+    int? ProductTypeId = null,
+    int? RubroId = null);
diff --git a/src/api/SIGCM2.Application/Products/Create/CreateProductCommand.cs b/src/api/SIGCM2.Application/Products/Create/CreateProductCommand.cs
new file mode 100644
index 0000000..1645b22
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Create/CreateProductCommand.cs
@@ -0,0 +1,9 @@
+namespace SIGCM2.Application.Products.Create;
+
+public sealed record CreateProductCommand(
+    string Nombre,
+    int MedioId,
+    int ProductTypeId,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays);
diff --git a/src/api/SIGCM2.Application/Products/Create/CreateProductCommandValidator.cs b/src/api/SIGCM2.Application/Products/Create/CreateProductCommandValidator.cs
new file mode 100644
index 0000000..8851383
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Create/CreateProductCommandValidator.cs
@@ -0,0 +1,26 @@
+using FluentValidation;
+
+namespace SIGCM2.Application.Products.Create;
+
+public sealed class CreateProductCommandValidator : AbstractValidator<CreateProductCommand>
+{
+    public CreateProductCommandValidator()
+    {
+        RuleFor(x => x.Nombre)
+            .NotEmpty().WithMessage("El nombre del producto es requerido.")
+            .MaximumLength(300).WithMessage("El nombre no puede superar los 300 caracteres.");
+
+        RuleFor(x => x.MedioId)
+            .GreaterThan(0).WithMessage("MedioId debe ser un entero positivo.");
+
+        RuleFor(x => x.ProductTypeId)
+            .GreaterThan(0).WithMessage("ProductTypeId debe ser un entero positivo.");
+
+        RuleFor(x => x.BasePrice)
+            .GreaterThanOrEqualTo(0m).WithMessage("El precio base no puede ser negativo.");
+
+        RuleFor(x => x.PriceDurationDays)
+            .GreaterThan(0).When(x => x.PriceDurationDays.HasValue)
+            .WithMessage("PriceDurationDays debe ser >= 1 cuando se provee.");
+    }
+}
diff --git a/src/api/SIGCM2.Application/Products/Create/ProductCreatedDto.cs b/src/api/SIGCM2.Application/Products/Create/ProductCreatedDto.cs
new file mode 100644
index 0000000..0ddeec7
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Create/ProductCreatedDto.cs
@@ -0,0 +1,12 @@
+namespace SIGCM2.Application.Products.Create;
+
+public sealed record ProductCreatedDto(
+    int Id,
+    string Nombre,
+    int MedioId,
+    int ProductTypeId,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays,
+    bool IsActive,
+    DateTime FechaCreacion);
diff --git a/src/api/SIGCM2.Application/Products/Deactivate/DeactivateProductCommand.cs b/src/api/SIGCM2.Application/Products/Deactivate/DeactivateProductCommand.cs
new file mode 100644
index 0000000..e963cb6
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Deactivate/DeactivateProductCommand.cs
@@ -0,0 +1,3 @@
+namespace SIGCM2.Application.Products.Deactivate;
+
+public sealed record DeactivateProductCommand(int Id);
diff --git a/src/api/SIGCM2.Application/Products/Deactivate/ProductStatusDto.cs b/src/api/SIGCM2.Application/Products/Deactivate/ProductStatusDto.cs
new file mode 100644
index 0000000..26885b9
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Deactivate/ProductStatusDto.cs
@@ -0,0 +1,6 @@
+namespace SIGCM2.Application.Products.Deactivate;
+
+public sealed record ProductStatusDto(
+    int Id,
+    bool IsActive,
+    DateTime? FechaModificacion);
diff --git a/src/api/SIGCM2.Application/Products/GetById/GetProductByIdQuery.cs b/src/api/SIGCM2.Application/Products/GetById/GetProductByIdQuery.cs
new file mode 100644
index 0000000..e4e103a
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/GetById/GetProductByIdQuery.cs
@@ -0,0 +1,3 @@
+namespace SIGCM2.Application.Products.GetById;
+
+public sealed record GetProductByIdQuery(int Id);
diff --git a/src/api/SIGCM2.Application/Products/GetById/ProductDetailDto.cs b/src/api/SIGCM2.Application/Products/GetById/ProductDetailDto.cs
new file mode 100644
index 0000000..315a9e3
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/GetById/ProductDetailDto.cs
@@ -0,0 +1,13 @@
+namespace SIGCM2.Application.Products.GetById;
+
+public sealed record ProductDetailDto(
+    int Id,
+    string Nombre,
+    int MedioId,
+    int ProductTypeId,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays,
+    bool IsActive,
+    DateTime FechaCreacion,
+    DateTime? FechaModificacion);
diff --git a/src/api/SIGCM2.Application/Products/List/ListProductsQuery.cs b/src/api/SIGCM2.Application/Products/List/ListProductsQuery.cs
new file mode 100644
index 0000000..9db9d65
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/List/ListProductsQuery.cs
@@ -0,0 +1,10 @@
+namespace SIGCM2.Application.Products.List;
+
+public sealed record ListProductsQuery(
+    int Page = 1,
+    int PageSize = 20,
+    bool? Activo = true,
+    string? Search = null,
+    int? MedioId = null,
+    int? ProductTypeId = null,
+    int? RubroId = null);
diff --git a/src/api/SIGCM2.Application/Products/List/ProductListItemDto.cs b/src/api/SIGCM2.Application/Products/List/ProductListItemDto.cs
new file mode 100644
index 0000000..3c4bfc5
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/List/ProductListItemDto.cs
@@ -0,0 +1,11 @@
+namespace SIGCM2.Application.Products.List;
+
+public sealed record ProductListItemDto(
+    int Id,
+    string Nombre,
+    int MedioId,
+    int ProductTypeId,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays,
+    bool IsActive);
diff --git a/src/api/SIGCM2.Application/Products/Update/ProductUpdatedDto.cs b/src/api/SIGCM2.Application/Products/Update/ProductUpdatedDto.cs
new file mode 100644
index 0000000..8c1e5a5
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Update/ProductUpdatedDto.cs
@@ -0,0 +1,13 @@
+namespace SIGCM2.Application.Products.Update;
+
+public sealed record ProductUpdatedDto(
+    int Id,
+    string Nombre,
+    int MedioId,
+    int ProductTypeId,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays,
+    bool IsActive,
+    DateTime FechaCreacion,
+    DateTime? FechaModificacion);
diff --git a/src/api/SIGCM2.Application/Products/Update/UpdateProductCommand.cs b/src/api/SIGCM2.Application/Products/Update/UpdateProductCommand.cs
new file mode 100644
index 0000000..b80c0d9
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Update/UpdateProductCommand.cs
@@ -0,0 +1,8 @@
+namespace SIGCM2.Application.Products.Update;
+
+public sealed record UpdateProductCommand(
+    int Id,
+    string Nombre,
+    int? RubroId,
+    decimal BasePrice,
+    int? PriceDurationDays);
diff --git a/src/api/SIGCM2.Application/Products/Update/UpdateProductCommandValidator.cs b/src/api/SIGCM2.Application/Products/Update/UpdateProductCommandValidator.cs
new file mode 100644
index 0000000..daa5934
--- /dev/null
+++ b/src/api/SIGCM2.Application/Products/Update/UpdateProductCommandValidator.cs
@@ -0,0 +1,23 @@
+using FluentValidation;
+
+namespace SIGCM2.Application.Products.Update;
+
+public sealed class UpdateProductCommandValidator : AbstractValidator<UpdateProductCommand>
+{
+    public UpdateProductCommandValidator()
+    {
+        RuleFor(x => x.Id)
+            .GreaterThan(0).WithMessage("Id debe ser un entero positivo.");
+
+        RuleFor(x => x.Nombre)
+            .NotEmpty().WithMessage("El nombre del producto es requerido.")
+            .MaximumLength(300).WithMessage("El nombre no puede superar los 300 caracteres.");
+
+        RuleFor(x => x.BasePrice)
+            .GreaterThanOrEqualTo(0m).WithMessage("El precio base no puede ser negativo.");
+
+        RuleFor(x => x.PriceDurationDays)
+            .GreaterThan(0).When(x => x.PriceDurationDays.HasValue)
+            .WithMessage("PriceDurationDays debe ser >= 1 cuando se provee.");
+    }
+}
diff --git a/tests/SIGCM2.Application.Tests/Products/Validators/ProductValidatorsTests.cs b/tests/SIGCM2.Application.Tests/Products/Validators/ProductValidatorsTests.cs
new file mode 100644
index 0000000..c39d444
--- /dev/null
+++ b/tests/SIGCM2.Application.Tests/Products/Validators/ProductValidatorsTests.cs
@@ -0,0 +1,132 @@
+using FluentValidation.TestHelper;
+using SIGCM2.Application.Products.Create;
+using SIGCM2.Application.Products.Update;
+
+namespace SIGCM2.Application.Tests.Products.Validators;
+
+/// <summary>
+/// PRD-002 — Validator tests for CreateProductCommand and UpdateProductCommand.
+/// </summary>
+public class ProductValidatorsTests
+{
+    private readonly CreateProductCommandValidator _createValidator = new();
+    private readonly UpdateProductCommandValidator _updateValidator = new();
+
+    // ── Create: Nombre ────────────────────────────────────────────────────────
+
+    [Fact]
+    public void Create_NombreEmpty_FailsValidation()
+    {
+        var cmd = ValidCreate() with { Nombre = "" };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.Nombre);
+    }
+
+    [Fact]
+    public void Create_NombreWhitespace_FailsValidation()
+    {
+        var cmd = ValidCreate() with { Nombre = "   " };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.Nombre);
+    }
+
+    [Fact]
+    public void Create_NombreOver300Chars_FailsValidation()
+    {
+        var cmd = ValidCreate() with { Nombre = new string('X', 301) };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.Nombre);
+    }
+
+    // ── Create: MedioId / ProductTypeId ───────────────────────────────────────
+
+    [Fact]
+    public void Create_MedioIdZero_FailsValidation()
+    {
+        var cmd = ValidCreate() with { MedioId = 0 };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.MedioId);
+    }
+
+    [Fact]
+    public void Create_ProductTypeIdZero_FailsValidation()
+    {
+        var cmd = ValidCreate() with { ProductTypeId = 0 };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.ProductTypeId);
+    }
+
+    // ── Create: BasePrice ─────────────────────────────────────────────────────
+
+    [Fact]
+    public void Create_NegativeBasePrice_FailsValidation()
+    {
+        var cmd = ValidCreate() with { BasePrice = -0.01m };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.BasePrice);
+    }
+
+    [Fact]
+    public void Create_ZeroBasePrice_Passes()
+    {
+        var cmd = ValidCreate() with { BasePrice = 0m };
+        _createValidator.TestValidate(cmd).ShouldNotHaveValidationErrorFor(x => x.BasePrice);
+    }
+
+    // ── Create: PriceDurationDays ──────────────────────────────────────────────
+
+    [Fact]
+    public void Create_PriceDurationDaysZero_FailsValidation()
+    {
+        var cmd = ValidCreate() with { PriceDurationDays = 0 };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.PriceDurationDays);
+    }
+
+    [Fact]
+    public void Create_PriceDurationDaysNegative_FailsValidation()
+    {
+        var cmd = ValidCreate() with { PriceDurationDays = -1 };
+        _createValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.PriceDurationDays);
+    }
+
+    [Fact]
+    public void Create_PriceDurationDaysNull_Passes()
+    {
+        var cmd = ValidCreate() with { PriceDurationDays = null };
+        _createValidator.TestValidate(cmd).ShouldNotHaveValidationErrorFor(x => x.PriceDurationDays);
+    }
+
+    // ── Create: valid ─────────────────────────────────────────────────────────
+
+    [Fact]
+    public void Create_ValidCommand_Passes()
+    {
+        _createValidator.TestValidate(ValidCreate()).ShouldNotHaveAnyValidationErrors();
+    }
+
+    // ── Update: Id must be > 0 ────────────────────────────────────────────────
+
+    [Fact]
+    public void Update_IdZero_FailsValidation()
+    {
+        var cmd = ValidUpdate() with { Id = 0 };
+        _updateValidator.TestValidate(cmd).ShouldHaveValidationErrorFor(x => x.Id);
+    }
+
+    [Fact]
+    public void Update_ValidCommand_Passes()
+    {
+        _updateValidator.TestValidate(ValidUpdate()).ShouldNotHaveAnyValidationErrors();
+    }
+
+    // ── Helpers ───────────────────────────────────────────────────────────────
+
+    private static CreateProductCommand ValidCreate() => new(
+        Nombre: "Clasificado Estándar",
+        MedioId: 1,
+        ProductTypeId: 2,
+        RubroId: null,
+        BasePrice: 100.50m,
+        PriceDurationDays: null);
+
+    private static UpdateProductCommand ValidUpdate() => new(
+        Id: 1,
+        Nombre: "Clasificado Estándar",
+        RubroId: null,
+        BasePrice: 100.50m,
+        PriceDurationDays: null);
+}