Traditionally, many style guides define components as atomic components, which are then used to build more complex molecules. In theory, this works well to create coherent and flexible systems. In practice, however, what often happens is that these re-usable atoms are used many different ways, allowing all kinds of molecules to be created. Again, this opens the door for all kinds of disjointed experiences and makes the system harder to maintain.

At TripAdvisor, we believe in the power of travel — and in helping you make the most of every trip. With over 500 million candid traveler reviews, we can help you make the right choice when you shop for hotels, restaurants, and attractions. You'll also find low airfares, free travel guides, worldwide vacation rental listings, popular forums with advice about virtually every destination, and more. When it’s time to book, we can help you save up to 30% on hotels, checking 200+ sites to find you today’s lowest prices. And when you’re on your trip, our free mobile app is your ultimate travel companion.


Expedia is one of the leading online travel agencies in the world, and while Expedia specializes in vacation packages, it also offers car rentals, hotel stays, cruises and the ability to book discounted attractions such as theme parks, shows and tours of famous and popular attractions. I love using Expedia because I can book everything at once — from my flight and hotel room to a car and tickets to hot destinations around where I’ll be staying — and not have to worry about a thing. Reading the guest reviews for our Florida vacation trip gave me an insider view of the hotels before I booked, and I used Expedia to coordinate the whole trip, so the flight, hotel and rental car were all set when we were ready to start our vacation. That took so much stress off of the vacation planning, and with the extra money we saved, we were able to buy extra souvenirs for our friends and family back home. Here are some ways you can ensure that your vacation planning is as relaxing and discounted as possible:
In this new study, which looks at Airbnb's role in racial gentrification, Inside Airbnb has racially categorized every host's photograph and found that in prodominatnly Black neighborhoods, white hosts own the majority of listings and recieve most of the economic benefits, while long-term Black residents are most impacted by the loss of housing and neighborhood disruption.
Forget about searching all over town for vacancies. Thanks to our selection of hotels, you can spend more time enjoying the city and less time worrying about finding a place to sleep. We have hotels located within easy access of the airport, downtown, public transportation stations, and top attractions, so you can conveniently find a hotel near your current location—no matter where you are.
Due to the growth of international end-users, in early 2012, Airbnb opened offices in Paris, Milan, Barcelona, Copenhagen, Moscow, and São Paulo.[36] These openings were in addition to existing offices in San Francisco, London, Hamburg, and Berlin.[46] In September 2013, the company announced that it would establish its European headquarters in Dublin.[47][48] Prior to the 2012 Summer Olympics, Airbnb acquired London-based rival CrashPadder, subsequently adding 6,000 international listings to its existing inventory. This acquisition made Airbnb the largest lodging website in the United Kingdom.[49][50]
Airbnb has grown significantly over the last 3 years. To support demand, the company uses 200 Amazon Elastic Compute Cloud (Amazon EC2) instances for its application, memcache, and search servers. Within Amazon EC2, Airbnb is using Elastic Load Balancing, which automatically distributes incoming traffic between multiple Amazon EC2 instances. To easily process and analyze 50 Gigabytes of data daily, Airbnb uses Amazon Elastic MapReduce (Amazon EMR). Airbnb is also using Amazon Simple Storage Service (Amazon S3) to house backups and static files, including 10 terabytes of user pictures. To monitor all of its server resources, Airbnb uses Amazon CloudWatch, which allows the company to easily supervise all of its Amazon EC2 assets through the AWS Management Console, Command Line Tools, or a Web services API.

American Airlines is one of the largest airlines in the world, with flights to over 250 destinations across the United States and around the globe. As an oneworld partner, passengers can enjoy travel on one ticket to over 800 destinations. Cheap American Airlines reservations can be found every day on Expedia, with offers for new discount fares loaded daily.


Guests can search for lodging using filters such as lodging type, dates, location, and price. Before booking, users must provide personal and payment information. Some hosts also require a scan of a government-issued identification before accepting a reservation.[4] The company also provides travel guides, entitled "Neighborhoods", which provide details about staying in specific neighborhoods in various major cities.[5][6]
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