To start online business in restaurants quickly, we can adopt the following strategies:

1. Create an online ordering platform: build an easy-to-use website or mobile application, so that customers can browse menus, place orders and pay for them conveniently. Make sure the interface is concise and easy to navigate, and provide online payment options.

2. Takeaway service cooperation: Cooperate with takeaway platforms (such as Meituan, Hungry, Baidu Takeaway, etc.) to put restaurant dishes on their platforms. This can quickly expand the reach and attract more users and orders.

3. Social media promotion: Use social media platforms (such as WeChat, Weibo, Instagram and Facebook) to carry out online promotion activities. Publish attractive food photos, preferential information and event announcements, interact with fans, and encourage customers to promote and promote through social sharing.

4. coupons and promotions: provide some unique coupons and promotions, such as first-time booking discount, full discount, package discount, etc. These offers can attract customers to try them out and encourage them to place orders again.

5. cooperation with food bloggers: cooperate with local or influential food bloggers and invite them to visit your restaurant and share their dining experience. The recommendation and comments of food bloggers can increase the exposure and credibility of restaurants.

6. Online marketing advertisements: display advertisements in search engines, social media, take-away platforms, etc. to enhance brand exposure and popularity. Use targeted advertising to accurately show advertisements to your target audience.

7. User evaluation and word-of-mouth management: actively manage user evaluation and respond to user feedback. Good word of mouth and user evaluation can attract customers' trust and bring more orders.

9. fast delivery and service quality: ensure fast delivery of take-away orders and high-quality food packaging. Customers' satisfaction with the delivery speed and food quality directly affects whether to buy again and spread word of mouth.

it should be noted that compared with offline business, online business needs to conduct appropriate market research and planning, and ensure that restaurants have sufficient production and distribution capacity to meet the order demand. At the same time, analyze marketing data and user feedback regularly, and optimize and adjust strategies according to market feedback.