Reading the law, it becomes clear that any business which is involved in selling goods or services to customers out of a commercial office becomes liable to register.
To repeat the point made earlier then, if you work out of an office and your products or services are sold online, you could exploit the loophole that no customers are purchasing from your shop, and hence registration would not be necessary. If however, you also entertain walk in clients and sell products and services to them, that loop-hole would no longer be available to you to use.

Every Indian state has enacted certain rules and regulations with regard to conditions of work. The objective is to secure uniform benefits for employees working in different establishments, from shops, commercial establishments and residential hotels to restaurants, theatres and other places of public amusement or entertainment.

The employer of every establishment engaging less than ten workers shall submit an online intimation of commencement of the business along with the required documents. After receiving an Information along with all the documents, a receipt of such intimation in Form ‘G’ shall be issued to the applicant online

Establishments employing 10 or more employees need to obtain the registration certificate (online) which will be valid for a lifetime

Shop Act is a mandatory requirement if the business premises are located within municipal limits. It is applicable even if you are doing your business for your home or residential premises. … It is compulsory to display the Shop Act Intimation/Registration certificate in a prominent place in the business premises.

The employer of every establishment engaging less than ten employees shall submit an online intimation in Form ‘ F ‘ of commencement of the business along with the required documents as specified in Part ‘ C ‘ of the Schedule. Issue of Receipt of Intimation.