Cycle time refers to the period required to complete one cycle of an operation; or to complete a function, job, or task from start to finish. Cycle time is used in differentiating total duration of a process from its run time.

It is the average time between successive deliveries. In other words:
Cycle Time = Operating Hours per day / Quantity per day
For example, assume that the plant operates for 10 hours per day and need to produce 60 computers each day. The Cycle Time is 10 / 60 = 1/6th of an hour,which is 10 minutes. In other words, on average every 10 minutes a computer rolls off the assembly line.
“Quantity per day” is the same as Throughput for a day, in the example 60 computers per day.
As the old saying goes that time is money, critical business processes are subject to the rule of thumb that time is money. Such processes are usually carried out through resources that often result as bottlenecks. Unfortunately, the products derived from these processes are usually the ones that matter most to customers; therefore, the products need to be delivered as fast as possible. This cuts across both to the internal and external clients, manufacturing and service industries.

    Competitive Advantage:Business and service delivery has changed over recent years, and competitors threaten in almost every market. Reducing product cycle times increases the potential to develop and deliver innovative products and be first to market with them. This is especially true if you compete against multiple providers that offer similar products or close substitutes. Every day you reduce your cycle time is a day you gain in meeting or beating competitor product launch dates.
If company A cannot supply the desired product at the desired time, a competitor will.Inthisnew environment, cycle time reduction provides a key competitive advantage.

    Customer satisfaction: Reduced cycle time can translate into increased customer satisfaction. Quick response companies can launch new products earlier, penetrate
New markets faster, meet changing demand, and can deliver rapidly and on time. They can also offer their customers lower costs because quick response companies have streamlined processes with low inventory and less obsolete stock. According to empirical studies, halving the cycle time (and doubling the work-in-process inventory tums can increase productivity20% to 70%. Moreover, quartering the time for one step typically reduces costs by 20.05%.

    Improves quality: With reduced cycle times, quality improves too. Faster processes allow lower inventories which, in turn, expose weaknesses and increase the rate of improvement. After eliminating non-value added transactions (as opposed to value added transformations), there are fewer opportunities for defects. Fast cycle time organizations experience more rapid feedback throughout the supply chain as downstream customers receive goods closer and closer to the time they were manufactured.

    Cost savings: Cycle time reduction saves costs.

Typically, optimizing efficiency in production processes helps you cut down on cycle time, which saves you money. This often results from thorough analysis of every step of the development and production process, refinement of inefficient steps and removal of steps unnecessary to the process. Each hour or day cut from the product cycle time saves money spent on labor, equipment and utilities used in production.
For example, if manufacturing cannot respond quickly and if a high service level isdesired, then the organization must either keep high inventory or lengthen the promisedlead time. Also consider a service industry: Suppose the central store spends less time on internal clients, they will save on deterioration, pilferage and insurance if some of the inventory is insured. 

    Distribution Channel Benefits
Within a traditional distribution channel, manufacturers produce and then sell products to distributors or retailers, which eventually sell goods to consumers. Maintaining close relationships in your distribution channel is important to manufacturers, and reducing product cycle times helps you meet the needs and requirements of distribution channel partners. This strengthens your position and makes you more attractive for other resellers looking for efficient producers.
Cycle time reduction results in simplified processes with fewer steps. In most cases, a process that has fewer steps will yield fewer mistakes. Simpler processes produce fewer errors.

Common methods to reduce cycle time
There are several efforts suitable for reducing cycle times. Streamlining multiple efforts, however, can yield a much more efficient process resulting in cost and time savings and customer satisfaction. When reducing process cycle time, consider a combination of the following ideas.
Perform activities in parallel. Most of the steps in a business process are often performed in sequence. A serial approach results in the cycle time for the entire process being the sum of the individual steps, not to mention transport and waiting time between steps. When using a parallel approach, the cycle time can be reduced by as much as 80% and produces a better result.
A classic example is product development, where the current trend is toward concurrent engineering. Instead of forming a concept, making drawings, creating a bill of materials, and mapping processes, all activities take place in parallel by integrated teams. In doing so, the development time is reduced dramatically, and the needs of all those involved are addressed during the development process.
Change the sequence of activities. Documents and products are often transported back and forth between machines, departments, buildings, and so forth. For instance, a document might be transferred between two offices a number of times for inspection and signing. If the sequence of some of these activities can be altered, it may be possible to perform much of the document's processing when it comes to a building the first time.
Reduce interruptions. Any issue that causes long delays and increases the cycle time for a critical business process is an interruption. The production of an important order can, for example, be stopped by an order from a far less valuable customer request--one that must be rushed because it has been delayed. Similarly, anyone working amidst a critical business process can be interrupted by a phone call that could have been handled by someone else. The main principle is that everything should be done to allow uninterrupted operation of the critical business processes and let others handle interruptions.
Improve timing. Many processes are performed with relatively large time intervals between each activity. For example, a purchasing order may only be issued every other day. Individuals using such reports should be aware of deadlines to avoid missing them, as improved timing in these processes can save many days of cycle time.
A case study in streamlining
Consider an electronics manufacturer receiving customer complaints about long order processing times--a cycle time of 29 days. An assessment of the order processing system revealed 12 instances where managers had to approve employees' work.
It was determined that the first 10 approval instances did not yield detailed reviews because managers felt the activity was an interruption when there were other activities that needed to be addressed. Those initiating the orders, therefore, were given authority to approve their own work. This saved an average of seven to eight days in the order processing activity.
Many subsystems had interfered with the process--each performing the same or similar tasks. The logical step was to perform redundancy elimination, and a detailed flowchart of the process was created. At closer inspection, 16 steps proved very similar to one another. By changing the sequence of activities and creating one companywide order document, 13 of these steps were removed.
Over a period of four months, the order system was totally redesigned to allow information to be entered once and become available to the entire organization. Due to this adjustment, activities could be handled in a parallel manner. After a value-added analysis, the manufacturer was able to reduce cycle time from 29 days to 9 days, save cost and employee time per standard order, and increase customer satisfaction.
The good news is that almost every company is a good candidate for cycle time reduction.