Some of the most popular types of deals during Prime Day are Lightning Deals, in which certain products are available at deeper-than-usual discounts for a limited time. (BestReviews)

Prime Day is taking place right now, and based on current estimates, summer's biggest sales event is slated to become the highest-grossing one since 2015. Many Amazon shoppers are searching for ways to optimize their time to find the best deals, which involves quick research and decision-making.

To point shoppers in the right direction, we've identified the top categories seeing the most discounts today, including electronics, kitchen, home and kids stuff. There is also a growing number of popular products with deep discounts, including Alexa devices, Apple Watches, pet vacuums and air fryers — and the list is only getting longer as Prime Day progresses.

Because prices and availability are subject to change today — especially with so many deals on popular products — we'll update this list of Prime Day deals frequently to keep you up to date. We organized these by popular categories so you can find what you're looking for quickly.

The Echo Show 5, one of Amazon’s bestselling Alexa devices, makes it easy to stay connected with hands-free video calls. Users can also stream media, set schedules and reminders or follow step-by-step recipes.

Le Creuset Enameled Cast-Iron Chef's Oven With Glass Lid: $249.95 (was $400)

Cook in style with this beautifully crafted piece from the famous French brand Le Creuset. The enameled cast-iron surface heats food evenly, requires no seasoning and makes cleanup a breeze. Choose from three colors: brilliant blue, red or orange.

This high-end robotic vacuum cleans floors efficiently by learning your preferences, habits and household layout. It comes with an Automatic Dirt Disposal base, which means you no longer need to empty the Roomba after every cleaning.

With a sleek new design that looks great on a desk or table, the updated Echo 4th Gen smart speaker makes a great addition to your home. Although the design is new, you’ll enjoy the same great sound and responsive Alexa voice command that fans love.

The AirPods Pro delivers superior listening experiences with an H1 chip, high dynamic range amplifier and custom speaker driver. It also fine-tunes audio with active noise cancellation and adaptive EQ technology.

Samsung Galaxy Tab A8 Tablet: $159.99 (was $229.99)

With a 10.5-inch screen and extended battery life, this Galaxy tablet is ideal for streaming media or mobile gaming. It comes with up to 128GB of storage so users can carry their favorite media, from selfies to videos, with them everywhere.

LG 27-Inch Ultragear Gaming Monitor: $264.99 (was $379.99)

Take PC gaming to the next level with this LG monitor that has a 144 Hz refresh rate and IPS 1 ms response time. The monitor is also equipped with adaptive-sync technology for seamless, fluid movement in games.

Kids can learn about tech while enjoying their very own tablet with this popular model. Beloved children’s content, parental controls and a rugged case are highlights of its feature set.

Keurig K-Elite Coffee Maker: $99.99 (was $189.99)

This capable Keurig not only brews hot coffee with the press of a button, but it also comes with an Iced setting for the perfect iced coffee. It has a 75-ounce reservoir and accommodates travel mugs up to 7.2 inches tall.

Ninja Foodi Power Blender Ultimate System: $199.99 (was $239.99)

This Ninja blender with food-processing capabilities is a powerful model that pulverizes ingredients into smoothie bowls, frozen drinks and spreads and can even shred, slice and grate for you. It comes with several accessories, including an extra-large 18-ounce smoothie bowl maker.

Cuisinart Classic Tri-Ply Stainless Steel Cookware Set: $174.99 (was $229.35)

Cuisinart’s professional-quality 10-piece cookware set covers most everyday cooking needs. The pots come with dishwasher-safe glass covers for hassle-free cleaning.

Farberware Nonstick Steel Bakeware Set: $44.99 (was $69.99)

With 10 essential pieces, this bakeware set is well stocked for all of your baking needs. The surfaces are nonstick so food slides off with ease. This feature also makes it easy to clean.

Black+Decker 20-Volt Max Cordless Drill/Driver: $36.99 (was $59)

This entry-level cordless drill from a trusted brand is a popular investment for DIY projects and arts and crafts. The 11-position clutch prevents stripped screws, and many users appreciate the LED work light.

Bissell PowerGlide Pet Slim Corded Vacuum: $129.99 (was $195.69)

If you’re looking for a lightweight pet vacuum, this cordless model is easy to maneuver at 9.5 pounds. It comes with three attachments for specialized cleaning and has an extra-large dust bin.

Honeywell HEPA Air Purifier: $136.99 (was $269.99)

This room purifier cleans air in rooms up to 465 square feet and captures up to 99.97% of allergens, bacteria and viruses. It’s also effective at neutralizing odors from pets, smoke and cooking.

Removing moisture from damp spaces improves a home’s indoor environment. This dehumidifier boasts straightforward controls and is ideal for spaces up to 720 square feet in size.

Young readers can carry around all their favorite stories with this kid-friendly Kindle. Not only does it come with a premium case, but the device is also backed by a two-year, worry-free guarantee that covers damage-related malfunctions.

Step2 Heart of the Home Kitchen Playset: $169.99 (was $209.99)

This realistic playset has moving parts and an appealing design that will keep youngsters engaged in imaginative play for hours. It’s ideal for toddlers and preschoolers age 2 and older.

[  Lego Classic Large Creative Brick Box: $43 (was $59.99) ]

Kids can get creative with this classic Lego set that’s packed with 790 pieces. Plus, the brick-shaped box serves as a storage bin. The set also includes a book of ideas to inspire kids to build.

Young novice drone enthusiasts will love the features of this low-cost model. In addition to offering a Wi-Fi camera and sporty LED lights, it’s easy for beginners to navigate.

This Centrum multivitamin is chock-full of essential vitamins and nutrients that support metabolism as well as immune function and hair and nail health. The non-GMO formula is made without gluten and artificial sweeteners.

Homedics Therapist Select Percussion Massager: $63.74 (was $131.99)

When you need relief, especially after tough workouts, this percussive massage delivers deep vibrations to soothe sore, achy muscles. The device includes four massage heads that provide targeted massage.

iHealth No-Touch Forehead Thermometer: $19.99 (was $54.99)

Taking temperatures is simple with this no-touch thermometer that works quickly without being noisy. The digital display is vivid and easy to read.

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Sian Babish is a writer for BestReviews. BestReviews is a product review company with a singular mission: to help simplify your purchasing decisions and save you time and money.

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